Fine Structure of the Normal Trigeminal Ganglion in the Cat and Monkey*
|
|
- Malcolm Owen
- 5 years ago
- Views:
Transcription
1 Fine Structure of the Normal Trigeminal Ganglion in the Cat and Monkey* DAVID S. MAXWELL, PH.D. Principal Contributor and Leader of Discussion HE inclusion of animal material m a y be justified as a means of obtaining optimal preservation of the ganglion. All ganglia were taken f r o m aldehyde-perfused animals, but some were less than optimally preserved by allowing p o s t m o r t e m changes to occur before perfusing and by perfusing with substantially hypertonic fixatives. We hoped that it would thus be possible to distinguish fixation artifacts f r o m pathological changes in the h u m a n material. The ganglion cells display a homogeneous nucleus and a large nucleolus. T h e nuclear cleft is prominent and continuous with the rough endoplasmic reticulum. The large surrounding expanses of cytoplasm contain p r o m i n e n t Nissl bodies, m a n y Golgi m e m brane accumulations, glycogen granules, numerous mitochondria, and extensive swirls of microtubules and fine filaments between the Nissl bodies. Clusters of lipofuscin granules m a y be observed in isolated patches. M a n y minute processes extend f r o m the surface of the ganglion cell and interlock with processes of the investing satellite cells. The single axon cannot be confused with these processes, due to its relatively enormous size, and its oriented microtubules and filaments. The axon is generally invested with several layers of satellite-cell cytoplasm, either f r o m multiple processes of a single cell in more distal regions of the axon or f r o m more than one satellite cell near the ganglion soma. The initial (unmyelinated) segment of the axon is commonly thrown into a tangled skein around the soma, according to metallic impregnation studies at the light microscopic level. This arrangement accounts for the presence of several axon profiles around a single ganglion cell in thin sections viewed with the electron microscope. The ganglion cells are totally wrapped in layered processes of satellite cells, arranged T * This work was done in collaboration with Drs. Anselmo Pineda and Lawrence Kruger. FIG. 21. Trigeminal ganglion, delayed fixation. Cat. Exsanguination and a 20-minute delay followed by glutaraldehyde-formaldehyde perfusion. An axon (A) at a node of Ranvier displays a not unusual herniation of axoplasm (arrows). The myelin sheath at the right (M) exhibits a slightly reduced osmiophilia, but the lamellar structure is well preserved. This is to be contrasted with the paranodal myelin which has lost its lamellar structure and its osmiophilia (E); 15,000. so that the processes nearest the soma interdigitate with the cytoplasmic evaginations of the ganglion cells. The satellite cells are in turn covered with a basal lamina which m a y extend between adjacent satellite cells or between the processes of a single satellite cell, but do not intervene between the ganglion cell or its processes and the satellite cells. The satellite cells display a degree of osmotic sensitivity. In ganglia perfused with fixative in a 0.15 M caeodylate buffer, these cells and their processes are distinctly shrunken away from the ganglion cell and f r o m each other, so that empty spaces a p p e a r between the processes and the neuron similar to those observed in Figure 11. As do Schwann ceils, satellite cells display some variation in nuclear morphology, especially in the c h r o m a t i n arrangement at the nuclear membrane, and some variability in cytoplasmic matrix density. I t seems reason127
2 128 Workshop on Trigeminal Neuralgia F1G. 22. Astrocytic dome in the root of the trigeminal ganglion. Japanese Ape, glutaraldehyde-formaldehyde. A myelinated axon emerges from the central portion of the root (below and left) at a node of Ranvier. The peripheral nerve myelin sheath on the axon is thicker than the central sheath, and the pattern of termination of each myelin lamella in the paranodal region is different in the central and peripheral internodes. The dome is characterized by numerous intertwined astrocytic processes, containing fibrils and glycogen. The basal lamina of the surface of the dome is continuous with that of the Schwann cell of the first peripheral internode; )< 14,000.
3 Anatomy of Trigeminal Ganglia 129 able that these morphological variations within a cell type are related to levels or types of activities, rather than to irregularities in preservation. The cytoplasm of the satellite cell contains numerous free ribosomes and an extensive rough endoplasmic reticulum, microtubules and filaments, and glycogen granules. The filaments and tubules are usually oriented parallel to the axon in satellite cells associated with the initial segment, but seem randomly dispersed elsewhere in the cells. The basal lamina of the satellite cell investment is continuous across the minute space separating adjacent cells, and is continuous with the basal lamina of the Schwann cell of the first myelin segment. Schwann cells in the ganglion are not remarkably different from those found in other peripheral nerves. The cytoplasm commonly contains osmiophilic laminated inclusions in the form of long bars or rods. The lamellae do not exhibit an identical repeat period from one inclusion to another; usually, however, the period is substantially less than that of myelin. These inclusions are found in Schwann cells associated with myelin, but not in those wrap- ping unmyelinated fibers. Schwann cell microtubules and filaments are oriented parallel to the axons associated with them. The plasma membrane of Schwann cells frequently displays rows of pinocytotic vesicles. Several unmyelinated axons may be embedded in a Schwann cell, but a Schwann cell which forms myelin myelinates only a single segment of a single axon. The presence of more than one myelinated profile in a Schwann cell is most likely due to cutting a curved axon, or cutting through a myelin redundancy or fold, especially common in nodal regions. A 20-minute delay in perfusion-fixation of the ganglion has remarkably little effect on the cytoplasm of the three cell types described. Generally, the glycogen is gone, and the mitochondria may display moderate swelling. The relationships between the satellite cells and the ganglion cells, and between the Schwann cells and the axons, are apparently undisturbed. The chromatin in the satellite cells and" the Schwann cells is distinctly clumped, but in the ganglion cells is relatively unaffected. The only other change FIG. 23. Astrocytic "island" in the trigeminal ganglion. Rhesus monkey, glutaraldehyde-formaldehyde. Below the intertwined processes of astrocytic processes are seen to be filled with fibrils and glycogen. The island is separated by a basal lamina from the rest of the ganglion which exhibits histological features of peripheral nerve. Above and right, fibroblast process, collagen and a myelin sheath; X25,000.
4 130 Workshop on Trigeminal Neuralgia FIG. 24. Myelin in the astrocytic dome of the root of the trigeminal ganglion. Japanese Ape, glutaraldehydeformaldehyde. An axon (A) is surrounded by a myelin sheath displaying extensive splitting and lamellar separation; X 50,000.
5 immediately evident occurs in the myelin. There are patches of greatly reduced osmiophilia in which the lamellar structure of the sheath is absent or disrupted (Fig. 21). This alteration is especially noted in Schmidt- Lantermann clefts and at nodes of Ranvier. Our tentative interpretation is that this alteration results from activation of lipolytic enzymes associated with Schwann cell cytoplasm trapped in clefts and at nodes. Such an interpretation is consistent with the appearance of myelin sheaths after lipid extraction. In the root of the ganglion there is an abrupt transition from central to peripheral nervous system features (Fig. 22). On the central side of the astrocytic dome, there is a feltwork of astroeytic processes through which the axons must pass to a limiting basal lamina separating the two regions. The processes are filled with astrocytic fibrils and contain glycogen granules; they appear no different, except in number, from astrocytic cytoplasm in other white matter in the central nervous system. Scattered among them are oligodendroeytes, which are presumably responsible for the myelin of the axons in this region. As the axons emerge from the dome, a node separates the central from the peripheral myelin. The Anatomy of Trigeminal Ganglia 131 basal lamina of the dome is continuous with the basal lamina investing the Schwann cell of the first peripheral internode. Patches of astrocytic processes can be found distal to the dome, appearing as apparently detached "islands" of central nervous system glia (Fig. 23). These islands can be found even as far distal as the ganglion. Axons are found in these islands but we have not observed ganglion cells. The islands are separated from the rest of the ganglion by a typical basal lamina. It is common in the islands and in the dome to find the myelin in a poor state of preservation. The lamellae are often split apart, and the sheath may display a severely distorted appearance, with folds in the myelin and a blistered or vacuolated appearance to the sheath generally (Fig. 24). The reason for the difficulty in preserving the myelin in these regions is obscure, but it could be that at the dome at least, the myelin is subject to the most stress during mechanical manipulation of the ganglion during tissue preparation. Alternatively, the central and peripheral portions of the nerve may be subject to different rates or degrees of shrinkage. A less likely interpretation is that this disrupted appearance represents the state of the sheath in life.
Introduction to Nervous Tissue
Introduction to Nervous Tissue Nervous Tissue Controls and integrates all body activities within limits that maintain life Three basic functions 1. sensing changes with sensory receptors 2. interpreting
More informationChapter 7 Nerve tissue 1 Liu Jiamei
Chapter 7 Nerve tissue 1 Liu Jiamei General description: nerve tissue nerve cells (neurons): show numerous long processes receive the stimulation make contact with each other, conduct the nerve impulse
More information8.2. Types of Neurons
Chapter 8 Nervous Tissue The neuron is the functional and the structural unit of the nervous system. It displays two highly developed physiological traits: 1. Irritability - the capacity to generate a
More informationNERVOUS TISSUE. 1. Functional units of the nervous system; receive, process, store and transmit information to other neurons, muscle cells or glands.
NERVOUS TISSUE LEARNING OBJECTIVES 1. Characterize and contrast the structure of neuronal cell bodies, dendrites and axons 2. List the classification of synapses and identify the basic structures of a
More informationBIOH111. o Cell Module o Tissue Module o Integumentary system o Skeletal system o Muscle system o Nervous system o Endocrine system
BIOH111 o Cell Module o Tissue Module o Integumentary system o Skeletal system o Muscle system o Nervous system o Endocrine system Endeavour College of Natural Health endeavour.edu.au 1 TEXTBOOK AND REQUIRED/RECOMMENDED
More informationNervous Tissue. The unit of nervous tissue is called neuron. It is the longest cell & it doesn t undergo cell division in matured state.
Nervous Tissue The unit of nervous tissue is called It is the longest cell & it doesn t undergo cell division in matured state. It is a special modified tissuess or cells for getting following two basic
More informationSheet: microscopic structures of the ns Done by: Rasha Rakan and Nisreen Obiedat
Sheet: microscopic structures of the ns Done by: Rasha Rakan and Nisreen Obiedat Lecture Objectives Classify the types of neurons. Describe the structure of the different parts of neurons. Describe the
More informationNervous Tissue. Dr. Heba Kalbouneh Associate Professor of Anatomy and Histology
Nervous Tissue Dr. Heba Kalbouneh Associate Professor of Anatomy and Histology Controls and integrates all body activities within limits that maintain life Three basic functions 1. sensing changes with
More informationNervous Tissue. Prof. Zhou Li Dept. of Histology and Embryology
Nervous Tissue Prof. Zhou Li Dept. of Histology and Embryology Organization: neurons (nerve cells) neuroglial cells Function: Ⅰ Neurons 1. structure of neuron soma neurite a. dendrite b. axon 1.1 soma
More informationBiology Dr. Khalida Ibrahim Nervous system The nervous system is responsible for communication between different regions of the body, it is divided
Biology Dr. Khalida Ibrahim Nervous system The nervous system is responsible for communication between different regions of the body, it is divided into: CNS (central nervous system) = brain + spinal cord
More informationNervous system is the most complex system in our body. It is formed by a network of more than 100 million nerve cells (neurons) assisted by many more
Nervous system Nervous system is the most complex system in our body. It is formed by a network of more than 100 million nerve cells (neurons) assisted by many more glial cells. Devoid from connective
More informationBIOL241 - Lecture 12a
Cranial Nerves, source: training.seer.cancer.gov Nervous System Overview BIOL241 - Lecture 12a 1 Topics Divisions of the NS: CNS and PNS Structure and types of neurons Synapses Structure and function of
More informationHISTOLOGY د.عبد الجبار فالح الربيعي
Nervous System The human Nervous system is the most complex system in the human body, is formed by a network of more than 100 million nerve cells (neurons) assisted by many more glial cells. Anatomically
More informationCells of the nervous system
Neurobiology Cells of the nervous system Anthony Heape 2011 1 Cells of the nervous system Neuroglia : part 2 The non excitable cells of the nervous system that provide support to neuronal survival and
More informationThe 7 th lecture. Anatomy and Physiology For the. 1 st Class. By Dr. Ala a Hassan Mirza
The 7 th lecture In Anatomy and Physiology For the 1 st Class By Dr. Ala a Hassan Mirza Nervous System (part I) The Nerve Tissue and the Nervous System The Tissues of the Body There are 4 types of tissues
More informationNervous system part 1. Danil Hammoudi.MD
Nervous system part 1 Danil Hammoudi.MD The central nervous system (CNS) is formed by : the brain spinal cord. These elements are enclosed within the skull and spinal vertebral canal. They are covered
More informationMajor Structures of the Nervous System. Brain, cranial nerves, spinal cord, spinal nerves, ganglia, enteric plexuses and sensory receptors
Major Structures of the Nervous System Brain, cranial nerves, spinal cord, spinal nerves, ganglia, enteric plexuses and sensory receptors Nervous System Divisions Central Nervous System (CNS) consists
More informationBiology 218 Human Anatomy
Chapter 17 Adapted form Tortora 10 th ed. LECTURE OUTLINE A. Overview of the Nervous System (p. 537) 1. The nervous system and the endocrine system are the body s major control and integrating centers.
More informationHISTOLOGY OF NERVOUS SYSTEM. DR. Nabil Khouri
HISTOLOGY OF NERVOUS SYSTEM DR. Nabil Khouri 2 NERVOUS SYSTEM 25/01/2017 The most complex system in the human body Formed by network more than 100 million neuron Each neuron has a thousand interconnection
More informationWhat Cell Make Up the Brain and Spinal Cord
What Cell Make Up the Brain and Spinal Cord Jennifer LaVail, Ph.D. (http://anatomy.ucsf.edu/pages/lavaillab/index.html) What kinds of cells are these?" Neuron?" Epithelial cell?" Glial cell?" What makes
More informationNervous System. Electrical Signals.III Signal Transmission at Synapses Neurotransmitters.V Neural Circuits.VI
Nervous System Overview.I Histology.II Electrical Signals.III Signal Transmission at Synapses Neurotransmitters.V Neural Circuits.VI Repairs.VII Pathology.VIII.IV 1 Controls and integrates all body activities
More information(3) Chemical synapse ---structure
(3) Chemical synapse ---structure LM: in silver preparation dark brown color button-liked on the surface of cell body and dendrites called synaptic button LM: synaptic button (3) Chemical synapse ---structure
More informationNervous system. 1. Neurons :
Nervous system nervous system is composed of billions of cells, the most essential being the nerve cells or neurons. There are estimated to be as many as 100 billion neurons in our nervous system. Two
More informationCell Overview. Hanan Jafar BDS.MSc.PhD
Cell Overview Hanan Jafar BDS.MSc.PhD THE CELL is made of: 1- Nucleus 2- Cell Membrane 3- Cytoplasm THE CELL Formed of: 1. Nuclear envelope 2. Chromatin 3. Nucleolus 4. Nucleoplasm (nuclear matrix) NUCLEUS
More informationFundamentals of the Nervous System and Nervous Tissue: Part A
PowerPoint Lecture Slides prepared by Janice Meeking, Mount Royal College C H A P T E R 11 Fundamentals of the Nervous System and Nervous Tissue: Part A This is Your Brain on Music Assignment 1 With your
More informationThe Nervous System 7PART A. PowerPoint Lecture Slide Presentation by Patty Bostwick-Taylor, Florence-Darlington Technical College
PowerPoint Lecture Slide Presentation by Patty Bostwick-Taylor, Florence-Darlington Technical College The Nervous System 7PART A Functions of the Nervous System Sensory input gathering information To monitor
More informationThe Nervous System: Neural Tissue Pearson Education, Inc.
13 The Nervous System: Neural Tissue Introduction Nervous System Characteristics Controls and adjust the activity of the body Provides swift but brief responses The nervous system includes: Central Nervous
More informationEM: myelin sheath shows a series of concentrically arranged lamellae
EM: myelin sheath shows a series of concentrically arranged lamellae ---- how to form myelin sheath? Schwann cell invagination and envelop the axon form mesaxon mesaxon become longer and longer winding
More informationNeurobiology. Cells of the nervous system
Neurobiology Cells of the nervous system Anthony Heape 2010 1 The nervous system Central nervous system (CNS) Peripheral nervous system (PNS) 2 Enteric nervous system (digestive tract, gall bladder and
More informationApril 29, Neurophysiology. Chul-Kyu Park, Ph.D. Assistant Professor Department of Physiology, Graduate School of Medicine, Gachon University,
April 29, 2016 Neurophysiology Chul-Kyu Park, Ph.D. Assistant Professor Department of Physiology, Graduate School of Medicine, Gachon University, Cells in the brain Neurons glia 1. Astrocytes 2. Microglia
More information25 Things To Know. Neurons
25 Things To Know Neurons Neurons receive & transmit to other cells Neurons Many last your whole life Neurons Many last your whole life Other cells die and are replaced Most aren t replaced Neurons Hippocampus
More informationNerve tissue & the Nervous System
Nerve tissue & the Nervous System The human nervous system, by far the most complex system in the body, is formed by a network of many billion nerve cells (neurons), all assisted by many more supporting
More informationFunc?ons of the Nervous System. Divisions of the Nervous System 1/28/ Sensory input. 2. Integra?on
Func?ons of the Nervous System 11 Fundamentals of the Nervous System and Nervous Tissue: Part A 1. Sensory input Informa?on gathered by sensory receptors about internal and external changes 2. Integra?on
More informationFundamentals of the Nervous System and Nervous Tissue. Nervous System. Basic Divisions of the Nervous System C H A P T E R 12.
C H A P T E R 12 Fundamentals of the Nervous System and Nervous Tissue Nervous System Sensory input Integration Motor output Figure 12.1 Basic Divisions of the Nervous System Brain CNS Spinal cord Nerves
More informationCollin County Community College BIOL Week 5. Nervous System. Nervous System
Collin County Community College BIOL 2401 Week 5 Nervous System 1 Nervous System The process of homeostasis makes sure that the activities that occur in the body are maintained within normal physiological
More informationBasic Structure of a Cell
Basic Structure of a Cell 1 Introduction to Cells Cells are the basic units of organisms Cells can only be observed under microscope Basic types of cells: Animal Cell Plant Cell Bacterial Cell 2 Number
More informationNERVOUS SYSTEM 1 CHAPTER 10 BIO 211: ANATOMY & PHYSIOLOGY I
BIO 211: ANATOMY & PHYSIOLOGY I 1 Ch 10 A This set Ch 10 B CHAPTER 10 NERVOUS SYSTEM 1 BASIC STRUCTURE and FUNCTION Dr. Lawrence G. Altman www.lawrencegaltman.com Some illustrations are courtesy of McGraw-Hill.
More informationOverview of the Nervous System A. Subdivisions of the Nervous System: 1. The two major subdivisions of the nervous system:
BIO 211: ANATOMY & PHYSIOLOGY I 1 Ch 10 A This set Ch 10 B CHAPTER 10 NERVOUS SYSTEM 1 BASIC STRUCTURE and FUNCTION Dr. Lawrence G. Altman www.lawrencegaltman.com Some illustrations are courtesy of McGraw-Hill.
More informationNeurophysiology. Corresponding textbook pages: ,
Neurophysiology Corresponding textbook pages: 436-440, 442-455 Organization Helps maintain homeostasis in the body Nervous system and endocrine system Nervous system is faster due to nerve impulses 1 Fig.
More informationThe Nervous System & Nervous tissue. Dr. Ali Ebneshahidi
The Nervous System & Nervous tissue Dr. Ali Ebneshahidi Functions of the Nervous System 1. Nervous system and endocrine system are the chief control centers in maintaining body homeostasis. 2. Nervous
More informationA. Subdivisions of the Nervous System: 1. The two major subdivisions of the nervous system:
BIO 211: ANATOMY & PHYSIOLOGY I 1 Ch 10 A Ch 10 B CHAPTER 10 NERVOUS SYSTEM 1 BASIC STRUCTURE and FUNCTION Dr. Lawrence G. Altman www.lawrencegaltman.com Some illustrations are courtesy of McGraw-Hill.
More informationThe Neuron by Richard H. Hall, 1998
The Neuron by Richard H. Hall, 1998 External Structure A neuron can be defined as a nerve cell. The neuron is often thought of as the "building block" of the nervous system, and for good reason. The neuron
More informationThe Fine Structure of the Epithelial Cells of the Mouse Prostate* II. Ventral Lobe Epithelium
Published Online: 1 June, 1960 Supp Info: http://doi.org/10.1083/jcb.7.3.511 Downloaded from jcb.rupress.org on September 28, 2018 The Fine Structure of the Epithelial Cells of the Mouse Prostate* II.
More informationThe Neuron. Consists Of: - cell body. - Dendrites - axon - axon terminal - myelin. dendrites Axon terminal. Cell body. nucleus. axon.
The Neuron Consists Of: - cell body - Dendrites - axon - axon terminal - myelin dendrites Axon terminal Cell body nucleus myelin axon THE SYNAPSE Definition: It is a point of contact between the axon of
More informationBasophilic. Basophilic structures are stained by basic dyes: Mnemonic: Basophilic = Blue
Cell Overview Basophilic Basophilic structures are stained by basic dyes: Basic dyes are positive Basophilic structures are negative (ex. DNA, RNA, ribosomes, RER) Mnemonic: Basophilic = Blue Acidophilic
More informationHuman Histology The Nervous System. Dr. Rawaa Salim Hameed
Human Histology The Nervous System Dr. Rawaa Salim Hameed The organization of the nervous system Anatomically, the nervous system is divided into:- Neurohistology Structurally, nerve tissue consists of
More informationNeuronal plasma membrane
ORGANELLES ORGANELLES Neuronal plasma membrane The neuronal plasma membrane contains several local domains with unique properties Presynaptic terminal Endoplasmic Reticulum In neurons the Nissl bodies
More informationDevelopment of the myelin sheath of the hypogastric nerves in a human foetus aged 23 weeks
O R I G I N A L A R T I C L E Folia Morphol. Vol. 63, No. 3, pp. 289 301 Copyright 2004 Via Medica ISSN 0015 5659 www.fm.viamedica.pl Development of the myelin sheath of the hypogastric nerves in a human
More informationThe Nervous System PART A
7 The Nervous System PART A PowerPoint Lecture Slide Presentation by Jerry L. Cook, Sam Houston University ESSENTIALS OF HUMAN ANATOMY & PHYSIOLOGY EIGHTH EDITION ELAINE N. MARIEB Structural Classification
More information2401 : Anatomy/Physiology
Dr. Chris Doumen Week 5 2401 : Anatomy/Physiology Introduction Neural Tissue TextBook Readings Pages 388 through 397. Make use of the figures in your textbook ; a picture is worth a thousand words! Work
More informationNeuronal plasma membrane
ORGANELLES ORGANELLES Neuronal plasma membrane The neuronal plasma membrane contains several local domains with unique properties Presynaptic terminal Endoplasmic Reticulum In neurons the Nissl bodies
More informationChapter 2 Cell. Zhou Li Prof. Dept. of Histology and Embryology
Chapter 2 Cell Zhou Li Prof. Dept. of Histology and Embryology The inner life of the cell Ⅰ. Plasma membrane (Plasmalemma) 1.1 The structure Unit membrane: inner layer 3-layered structure outer layer mediat
More informationIT has been shown (Chou, 1957 a, b) that there are three kinds of lipid
279 The Ultra-fine Structure of Lipid Globules in the Neurones of Helix aspersa By J. T. Y. CHOU and G. A. MEEK (From the Cytological Laboratory, Department of Zoology; and Department of Human Anatomy,
More informationSOME BASIC TERMINOLOGY CNS: Central Nervous System: Brain + Spinal Cord
SOME BASIC TERMINOLOGY CNS: Central Nervous System: Brain + Spinal Cord CEREBROSPINAL FLUID (CSF): The fluid filling the ventricles, cerebral aqueduct, central canal, and subarachnoid space. It is a filtrate
More informationLearning expectations for BIOL 131. Chapters 11, Nervous System Overview Read Chapter 11. You should be able to:
NOTE The quiz will have question ONLY from the material we get through on Tuesday. The first midterm will cover all material from day one until the lecture before the second midterm. Learning expectations
More informationUnit Three. I. General Functions of the Nervous System. I. General Functions of the Nervous System
10 Refer to the following URLs. It is a good idea to print them and bring them to class. Be sure to study these along with your book. http://www.sirinet.net/~jgjohnso/nervous.html http://faculty.washington.edu/chudler/ap.html
More informationBI 232: Human Anatomy & Physiology
BI 232: Human Anatomy & Physiology Roster Business Course Introduction and Syllabus Notecard Name E-mail Why you are taking the course Something interesting you did over break Lecture Tips Use the Study
More informationEssentials of Anatomy and Physiology, 9e (Marieb) Chapter 3 Cells and Tissues. Short Answer. Figure 3.1
Essentials of Anatomy and Physiology, 9e (Marieb) Chapter 3 Cells and Tissues Short Answer Figure 3.1 Using Figure 3.1, match the following: 1) The illustration of simple cuboidal epithelium is. Answer:
More informationCells of the Nervous System
Cells of the Nervous System Layout of the Nervous System Central Nervous System (CNS) Brain (in the skull) Spinal Cord (in the spine) Interprets sensory input, initiates movement, and mediates complex
More informationHuman Anatomy and Physiology - Problem Drill 11: Neural Tissue & The Nervous System
Human Anatomy and Physiology - Problem Drill 11: Neural Tissue & The Nervous System Question No. 1 of 10 The human body contains different types of tissue. The tissue is formed into organs and organ systems.
More informationNervous system Overview ( The master communication system)
Nervous system Overview ( The master communication system) Neuron process Cell body nucleus Neuroglia Nerve Tissue COMPOSITION OF NERVE TISSUE Two principal types of cells, neurons and supporting cells
More informationChapter 11: Functional Organization of Nervous Tissue
Chapter 11: Functional Organization of Nervous Tissue I. Functions of the Nervous System A. List and describe the five major nervous system functions: 1. 2. 3. 4. 5. II. Divisions of the Nervous System
More informationNeuromuscular Control and Proprioception of the Shoulder
Neuromuscular Control and Proprioception of the Shoulder Neuromuscular Control and Proprioception of the Shoulder 3 Neuromuscular Control and Proprioception of the Shoulder 5 6 Atlas of the Shoulders
More informationDr. Heba Kalbouneh. Dr. Heba Kalbouneh. Dr. Heba Kalbouneh
DENTISTRY 2017 - UNIVERSITY OF JORDAN Dr. Heba Kalbouneh Dr. Heba Kalbouneh Sheets Dr. Heba Kalbouneh Slides Nervous tissue Function of nervous tissue: 1-Sensory function 2- Integration 3- Motor function
More informationNervous system. Dr. Rawaa Salim Hameed
Nervous system Dr. Rawaa Salim Hameed Central nervous system (CNS) CNS consists of the brain (cerebrum, cerebellum, and brainstem) and spinal cord CNS is covered by connective tissue layers, the meninges
More informationHuman height. Length of some nerve and muscle cells. Chicken egg. Frog egg. Most plant and animal cells Nucleus Most bacteria Mitochondrion
10 m 1 m 0.1 m 1 cm Human height Length of some nerve and muscle cells Chicken egg Unaided eye 1 mm Frog egg 100 µm 10 µm 1 µm 100 nm 10 nm Most plant and animal cells Nucleus Most bacteria Mitochondrion
More informationMan and his environment
Man and his environment Dr. Elriah M. Makie 0122858517 Nervous Tissue BSc.M.Sc.MBBS Introduction The nervous system is divided into two main parts: The central nervous system (CNS) comprising the brain
More informationChapter 7. The Nervous System
Chapter 7 The Nervous System General overview of the nervous system functions Sensory input (info travels in along afferent pathways) Integration (information is processed) Sensory neurons Spinal cord
More information6. What surrounds the nucleus? How many membranes does it have?
Biology-R track Study Guide: 7.2 Cell Structure Cell Organization 1. What are the 2 major parts that you can divide the eukaryotic cell into? 2. What part is the fluid portion of the cell outside the nucleus?
More informationNervous Tissue and Histology of CNS
Nervous Tissue and Histology of CNS Functions of Nervous System Like the CPU of a computer, the nervous system is the master controlling system of the body. It is designed to constantly and rapidly adjust
More informationPublished Online: 25 November, 1956 Supp Info: on November 16, 2018 jcb.rupress.org Downloaded from
Published Online: 25 November, 1956 Supp Info: http://doi.org/10.1083/jcb.2.6.799 Downloaded from jcb.rupress.org on November 16, 2018 B~IEF NOrmS 799 Permanganate--A New Fixative for Electron Microscopy.*
More informationAnatomy of a Neuron. Copyright 2000 by BSCS and Videodiscovery, Inc. Permission granted for classroom use. Updated Master 2.
Anatomy of a Neuron Master 2.1 Neurons Interact with Other Neurons through Synapses Master 2.2 Name Date Due Cells of the Nervous System Learning Target: Identify and state the function of the components
More informationHistology of the Eye
Histology of the Eye Objectives By the end of this lecture, the student should be able to describe: The general structure of the eye. The microscopic structure of:»cornea.»retina. EYE BULB Three coats
More informationChapter 12. Nervous Tissue
Chapter 12 Nervous Tissue Regulation of Homeostasis Two systems work together to maintain a stable internal environment // This is homeostais endocrine system communicates by means of chemical messengers
More informationCell Structure. Present in animal cell. Present in plant cell. Organelle. Function. strength, resist pressure created when water enters
Cell Structure Though eukaryotic cells contain many organelles, it is important to know which are in plant cells, which are in animal cells and what their functions are. Organelle Present in plant cell
More informationIrene Yu, class of 2019
Irene Yu, class of 2019 Nerve Cells and Glia Overview What is the brain made of - types of cells What do neurons do; How are they specialized to do it? CONCEPTS communication via signalling changeability
More informationTHE NEUROBIOLOGY OF THE NEURON AND THE NEUROGLIA
THE NEUROBIOLOGY OF THE NEURON AND THE NEUROGLIA DEFINITION OF A NEURON Neuron is the name given to the nerve cell and all its processes. Neurons are excitable cells that are specialized for the reception
More informationFunctions of the Nervous System. Fundamentals of the Nervous System & Nervous Tissue
Fundamentals of the Nervous System & Nervous Tissue Overview Structure cell types & structures Neurophysiology membrane potential Synapse, neurotransmitters & receptors Functions of the Nervous System
More informationChapter 7 Notes. Section 1
Chapter 7 Notes Section 1 Cells Cells remained out of sight during most of human history until the invention of the first microscopes. It was not until the mid 1600s that scientists began to use microscopes
More informationNerve Cell Flashcards
1. What does the word innervates mean? Refers to a nerve supplying a muscle or organ. For example, The phrenic nerve innervates the diaphragm muscle. 2. 3 parts of the Nervous System 1. Central Nervous
More informationPlasma Membrane. comprised of a phospholipid bilayer and embedded proteins separates the cells s contents from its surroundings
Cell Organelles Plasma Membrane comprised of a phospholipid bilayer and embedded proteins separates the cells s contents from its surroundings Cytosol the fluid Cytoplasm cell interior, everything outside
More informationThe Nervous System. PowerPoint Lecture Slides C H A P T E R 7. Prepared by Patty Bostwick-Taylor, Florence-Darlington Technical College
PowerPoint Lecture Slides Prepared by Patty Bostwick-Taylor, Florence-Darlington Technical College C H A P T E R 7 The Nervous System NERVOUS SYSTEM OVERVIEW Essential Question: What are the primary functions
More informationChapter 7 Nerve tissue 2
Chapter 7 Nerve tissue 2 Liu Jiamei Department of Histology and Embryology Cables conduct electric current from power plant to terminal user, forming a circuit loop. Nerve fibers are cables in human s
More informationbasic unit structure and function
Chapter 3 Cells Introduction The cell is the basic unit of structure and function in living things. Cells vary in their shape, size, and arrangements, but all cells have similar components with a particular
More informationNervous tissue. Lab. 7
Nervous tissue Lab. 7 Nervous tissue :- is responsible for transport nervous impulse (motor and sensory impulse), and it is formed by network more than 100 million nerve cell (neurons), nerve fiber and
More informationA Tour of the Cell. reference: Chapter 6. Reference: Chapter 2
A Tour of the Cell reference: Chapter 6 Reference: Chapter 2 Monkey Fibroblast Cells stained with fluorescent dyes to show the nucleus (blue) and cytoskeleton (yellow and red fibers), image courtesy of
More informationCHAPTER 4 A TOUR OF THE CELL
CHAPTER 4 A TOUR OF THE CELL Microscopes Con. 4.1 magnification: size resolution: clarity contrast: differences in parts Light Microscopy Techniques (p.68) a. Brightfield unstained b. Brightfield stained
More information(a) TEM of a plasma. Fimbriae. Nucleoid. Ribosomes. Plasma membrane. Cell wall Capsule. Bacterial chromosome
0 m m 0. m cm mm 00 µm 0 µm 00 nm 0 nm Human height Length of some nerve and muscle cells Chicken egg Frog egg Most plant and animal cells Most bacteria Smallest bacteria Viruses Proteins Unaided eye Light
More informationNervous Tissue Mediates Perception and Response *
OpenStax-CNX module: m46057 1 Nervous Tissue Mediates Perception and Response * OpenStax This work is produced by OpenStax-CNX and licensed under the Creative Commons Attribution License 3.0 By the end
More informationMansoura university Faculty of medicine Histology and cell Biology Department Curriculum Content And Logbook
Mansoura university Faculty of medicine Histology and cell Biology Department Curriculum Content And Logbook For the 1 st year Medical Student s In Histology and cell Biology Mansoura university Faculty
More informationEukaryotic cells are essentially two envelope systems. Nuclear materials are separated from cytoplasm by nuclear membrane. Complex structure Also
Dr. Gugale Pritesh Ramanlal M.Sc., Ph.D., B.Ed., D.M.L.T. Email id - pritesh.gugale09@gmail.com Contact numbernumber- 8446475310 Eukaryotic cells are essentially two envelope systems. Nuclear materials
More informationCell Structure and Function
Cell Structure and Function Agre and cells in the news Cells Smallest living unit Most are microscopic Discovery of Cells Robert Hooke (mid-1600s) Observed sliver of cork Saw row of empty boxes Coined
More informationChapter 12: Fundamentals of the Nervous System and Nervous Tissue
Chapter 12: Fundamentals of the Nervous System and Nervous Tissue Overview of the NS PNS (Peripheral Nervous System) CNS (Central Nervous System) Neurons Neuroglia Synapse Some nomenclature Developed by
More informationHuman Anatomy and Physiology I Laboratory
Human Anatomy and Physiology I Laboratory Histology of Nervous Tissue and The Spinal Cord This lab involves two laboratory exercises: 1) Histology of Nervous Tissue, and 2) Spinal Cord, Spinal Nerves,
More informationNeural Tissue. Chapter 12 Part A
Neural Tissue Chapter 12 Part A Homeostasis Homeostasis refers to maintaining internal environment. How does body maintain homeostasis?? 1. Each cell, tissue or organ maintain their own internal environment
More informationNervous tissue, charachteristics, neurons, glial cells
Nervous tissue, charachteristics, neurons, glial cells Functional Organization of Nervous Tissue The Nervous System Components Brain, spinal cord, nerves, sensory receptors Responsible for Sensory perceptions,
More informationFunctional Organization of Nervous Tissue. Nervous tissue, charachteristics, neurons, glial cells. The Nervous System. The Nervous System 21/12/2010
Nervous tissue, charachteristics, neurons, glial cells Functional Organization of Nervous Tissue The Nervous System Components Brain, spinal cord, nerves, sensory receptors Responsible for Sensory perceptions,
More informationCells and Tissues. Lesson 2.1: Molecules of Life Lesson 2.2: Cells Lesson 2.3: Tissues
2 Cells and Tissues Lesson 2.1: Molecules of Life Lesson 2.2: Cells Lesson 2.3: Tissues Chapter 2: Cells and Tissues Lesson 2.1 Molecules of Life Molecules of Life carbohydrates proteins lipids nucleic
More informationHuman Anatomy and Physiology- Problem Drill 04: Tissues of the Body
Human Anatomy and Physiology- Problem Drill 04: Tissues of the Body Question No. 1 of 10 A biopsy sample is obtained from a lesion on the right cheek of a male patient. A technician in the histology lab
More information