Chapter 4 Tissues, Glands, and Membranes
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1 Chapter 4 Tissues, Glands, and Membranes Copyright 2015 Wolters Kluwer Health Lippincott Williams & Wilkins
2 Overview
3 Key Terms adipose fibroblast parietal areolar histology serosa benign malignant staging biopsy matrix stem cell cancer membrane visceral cartilage metastasis chemotherapy mucosa chondrocyte mucus collagen myelin endocrine neoplasm epithelium neuroglia exocrine neuron fascia osteocyte
4 Tissue Origins Learning Objectives 1. Define stem cells, and describe their role in development and repair of tissue. 2. Name the four main groups of tissues, and give the location and general characteristics of each. 3. Describe the difference between exocrine and endocrine glands, and give examples of each.
5 Connective Tissue Learning Objective 4. Classify the different types of connective tissue.
6 Membranes Learning Objectives 5. Describe three types of epithelial membranes. 6. List six types of connective tissue membranes.
7 Benign and Malignant Tumors Learning Objectives 7. Explain the difference between benign and malignant tumors, and give several examples of each type. 8. Identify the most common methods of diagnosing and treating cancer.
8 Case Study Learning Objective 9. Using the case study and information in the text, describe the warning signs of cancer.
9 Word Anatomy Learning Objective 10. Show how word parts are used to build words related to tissues, glands, and membranes.
10 Tissue Origins Learning Objectives 1. Define stem cells, and describe their role in development and repair of tissue. 2. Name the four main groups of tissues, and give the location and general characteristics of each. 3. Describe the difference between exocrine and endocrine glands, and give examples of each.
11 Tissue Origins (cont.) Histology is the study of tissues. Four main groups of tissues Epithelial Connective Muscle Nervous tissue
12 Epithelial Tissue Overview Forms a protective covering for the body Outer layer of skin Forms membranes and ducts Lines body cavities and hollow organs
13 Epithelial Tissue (cont.) Structure Classification by shape Squamous Cuboidal Columnar Classification by layers Simple Stratified Pseudostratified
14 Epithelial Tissue (cont.) Simple Epithelium Single cell layer allows materials to pass from one system to another Type Description Locations Squamous Cuboidal Columnar Pseudostratified Flat, irregular cells with flat nuclei Square cells with central round nuclei Long narrow cells with ovoid basal nuclei Columnar cells that appear stratified, but are not Capillary walls, lung alveoli, glomerular capsule in the kidney, serous membranes Tubules and ducts, as in the kidney, liver, glands Lining of the stomach, intestine, oviducts Lining of respiratory passages
15 Epithelial Tissue (cont.) Figure 4-1 Simple epithelial tissues. In how many layers are these epithelial cells?
16 Epithelial Tissue (cont.) Stratified Epithelium Multiple cell layers provide protection in areas subject to wear and tear. Type Description Locations Squamous Flat, irregular cells in layers Outer layer of skin, lining of mouth, throat, anus, vagina Cuboidal Square cells in layers Not common some glands Columnar Long narrow cells in layers Not common larynx, some ducts Transitional Square cells that flatten as they are stretched and then return to original shape Lining of the urinary bladder
17 Epithelial Tissue (cont.) Figure 4-2 Stratified squamous epithelium. What is the function of stratified epithelium?
18 Epithelial Tissue (cont.) Special Functions Goblet cells secrete mucus. Trap foreign particles in the respiratory tract Protect lining of digestive organs Some epithelial cells have cilia. Sweep particles trapped in mucus away from the lungs Epithelial cells repair and replace themselves quickly.
19 Epithelial Tissue (cont.) Figure 4-3 Goblet cells.
20 Epithelial Tissue (cont.) Glands Produce substances that are sent out to other parts of the body Types Exocrine glands Use ducts to deliver product to other regions Example: Sweat and salivary glands Endocrine glands Use blood vessels to deliver hormones to other regions Example: Adrenal gland and pancreas
21 Epithelial Tissue (cont.) Checkpoints 4-1 What are the three basic shapes of epithelial cells? 4-2 What are the two categories of glands based on their method of secretion?
22 Epithelial Tissue (cont.) Pop Quiz 4.1 You are studying a slide in anatomy lab. You see several layers of tile-shaped cells. What tissue is most likely on the slide? A) Simple columnar epithelium B) Stratified columnar epithelium C) Simple squamous epithelium D) Stratified squamous epithelium
23 Epithelial Tissue (cont.) Pop Quiz Answer 4.1 You are studying a slide in anatomy lab. You see several layers of tile-shaped cells. What tissue is most likely on the slide? A) Simple columnar epithelium B) Stratified columnar epithelium C) Simple squamous epithelium D) Stratified squamous epithelium
24 Epithelium Pop Quiz 4.2 Which is an example of an endocrine gland? A) Glands secrete hydrochloric acid into the stomach. B) Pancreas secretes insulin, which regulates blood sugar. C) Respiratory epithelium secretes mucus on its surface. D) Salivary glands secrete enzymes into the mouth.
25 Epithelium (cont.) Pop Quiz Answer 4.2 Which is an example of an endocrine gland? A) Glands secrete hydrochloric acid into the stomach. B) Pancreas secretes insulin, which regulates blood sugar. C) Respiratory epithelium secretes mucus on its surface. D) Salivary glands secrete enzymes into the mouth.
26 Connective Tissue Learning Objective 4. Classify the different types of connective tissue.
27 Connective Tissue (cont.) Overview The supporting fabric of the body Contains large amounts of matrix between cells Categorized by physical properties Circulating connective tissue Generalized connective tissue Structural connective tissue
28 Connective Tissue (cont.) Circulating Connective Tissue Fluid connective tissue that travels in vessels Carries nutrients, gases, wastes, and other materials throughout body Type Description Locations Blood Cells in a fluid matrix Circulates through the heart and in blood vessels Lymph Fluid derived from blood plasma Circulates in lymphatic vessels
29 Connective Tissue (cont.) Generalized Connective Tissue Widely distributed and not highly specialized Types in order of increasing hardness: Loose Dense Cartilage Bone tissue
30 Connective Tissue (cont.) Loose Connective Tissue Soft matrix Provides support and protection Type Description Locations Areolar Cells in loose mixture of cells and fibers in a semiliquid matrix; abundant throughout body Adipose Composed of cells modified to store fat; insulates the body and is stored in tissues as energy supply Around organs and vessels, in membranes, under skin Padding around organs and joints, under skin
31 Connective Tissue (cont.) Figure 4-4 Circulating and loose connective tissue. Which of these tissues has the most fibers? Which of these tissues is modified for storage?
32 Connective Tissue (cont.) Dense Connective Tissue Firm matrix with large numbers of collagen and elastic fibers Provides protection, support, flexibility, and attachment Type Description Locations Irregular Regular Mostly collagen fibers in random arrangement Mostly collagen fibers in parallel alignment Fibrous membranes, capsules Ligaments, tendons
33 Connective Tissue (cont.) Cartilage Strong and flexible with a solid matrix Provides protection, structure, shock absorption, and elasticity Type Description Locations Hyaline Tough, translucent Covers ends of bones, makes up tip of nose, connects ribs to sternum, reinforces larynx and trachea Fibrocartilage Firm, rigid Elastic High in elastic fibers; can stretch and return to original size Between vertebrae, in anterior pubic joint, knee joint Larynx, epiglottis, outer ear
34 Connective Tissue (cont.) Bone Solid matrix hardened with mineral salts Makes up bones of skeleton Gives structure, support, and protection to body Works with muscles to produce movement
35 Connective Tissue (cont.) Figure 4-5 Dense connective tissue, cartilage and bone.
36 Connective Tissue (cont.) Checkpoints 4-3 What is the general name for the intercellular material in connective tissue? 4-4 What protein makes up the most abundant fibers in connective tissue? 4-5 What type of cell characterizes dense connective tissue? Cartilage? Bone tissue?
37 Connective Tissue (cont.) Pop Quiz 4.3 Chondrocytes are to cartilage as osteocytes are to A) Bone B) Fat C) Muscle D) Tendon
38 Connective Tissue (cont.) Pop Quiz Answer 4.3 Chondrocytes are to cartilage as osteocytes are to A) Bone B) Fat C) Muscle D) Tendon
39 Connective Tissue (cont.) Pop Quiz 4.4 You are studying a slide of a body tissue in anatomy lab. You see a few similar cells that do not contact each other and many thick collagen fibers oriented in the same direction. What tissue is most likely on the slide? A) Areolar connective tissue B) Dense connective tissue C) Stratified epithelial tissue D) Transitional epithelial tissue
40 Connective Tissue (cont.) Pop Quiz Answer 4.4 You are studying a slide of a body tissue in anatomy lab. You see a few similar cells that do not contact each other and many thick collagen fibers oriented in the same direction. What tissue is most likely on the slide? A) Areolar connective tissue B) Dense connective tissue C) Stratified epithelial tissue D) Transitional epithelial tissue
41 Muscle Tissue Types Skeletal muscle Voluntary Striated Cardiac muscle (myocardium) Involuntary Contains intercalated disks Smooth muscle (visceral muscle) Involuntary Unstriated
42 Muscle Tissue (cont.) Figure 4-6 Muscle tissue.
43 Muscle Tissue (cont.) Checkpoint 4-6 What are the three types of muscle tissue?
44 Muscle Tissue (cont.) Pop Quiz 4.5 Which tissue is striated and under involuntary control? A) Areolar connective tissue B) Cardiac muscle tissue C) Skeletal muscle tissue D) Smooth muscle tissue
45 Muscle Tissue (cont.) Pop Quiz Answer 4.5 Which tissue is striated and under involuntary control? A) Areolar connective tissue B) Cardiac muscle tissue C) Skeletal muscle tissue D) Smooth muscle tissue
46 Nervous Tissue Overview Nervous tissue makes up body s communication system. Nervous system components: Brain Nerves Spinal cord Cell types: Neuron Neuroglia
47 Nervous Tissue (cont.) The Neuron Basic unit of nervous tissue. Neurons transmit nerve impulses. Parts of a neuron Body Fibers A nerve is a bundle of nerve fibers held together with connective tissue.
48 Nervous Tissue (cont.) Neuroglia Support and protect nervous tissue Some protect the brain from harmful substances. Some get rid of foreign organisms and cellular debris. Some form myelin sheath around axons. Do not transmit nerve impulses
49 Nervous Tissue (cont.) Figure 4-7 Nervous tissue.
50 Nervous Tissue (cont.) Checkpoints 4-7 What is the basic cell of the nervous system, and what is its function? 4-8 What are the nonconducting support cells of the nervous system called?
51 Membranes Learning Objectives 5. Describe three types of epithelial membranes. 6. List six types of connective tissue membranes.
52 Membranes (cont.) Thin sheets of tissue Functions of membranes Cover surfaces Serve as dividers Line hollow organs or body cavities Anchor organs Secrete lubricants to ease the movement of organs Two main categories Epithelial membranes Connective tissue membranes
53 Membranes (cont.) Epithelial Membranes Outer surface is made of epithelium Type Serous membranes Mucous membranes Cutaneous membrane Description Line body cavities and cover internal organs Line tubes and ducts that open to outside of the body Commonly known as skin
54 Membranes (cont.) Serous Membranes Line body cavities and cover internal organs Do not connect to the outside of the body Secrete serous fluid that acts as a lubricant Type Pleurae Serous pericardium Peritoneum Description Parietal layer lines the thoracic cavity Visceral layer covers the lungs Parietal layer lines the pericardial sac Visceral layer covers the heart Parietal layer lines the abdominal cavity Visceral layer covers abdominal organs
55 Membranes (cont.) Figure 4-8 Organization of serous membranes.
56 Membranes (cont.) Mucous Membranes Line tubes and ducts that open to outside of the body Vary in structure and function Trap and remove foreign particles Protect deeper tissue Absorb food materials
57 Membranes (cont.) Connective Tissue Membranes Composed of connective tissue with no epithelium Type Description Synovial membranes Meninges Fascia Membranes that surround organs Line joint cavities and secrete synovial fluid, which lubricates joints Line small cushioning sacs near joints called bursae Cover the brain and spinal cord Superficial fascia underneath skin insulates body Deep fascia covers, separates, and protects skeletal muscles Fibrous pericardium surrounds the heart Periosteum surrounds bone Perichondrium surrounds cartilage
58 Membranes (cont.) Membranes and Disease Membranes play a part in disease process. Become inflamed or infected: Example: Peritonitis Act as pathways to spread disease in the body. Frequently involved in autoimmune disorders: Examples: Systemic lupus erythematosus and rheumatoid arthritis
59 Membranes (cont.) Checkpoints 4-9 What are the three types of epithelial membranes? 4-10 What is the difference between a parietal and a visceral serous membrane? 4-11 What is fascia, and where is it located?
60 Membranes (cont.) Pop Quiz 4.6 Which membrane contains epithelial tissue? A) Bursa B) Fascia C) Meninges D) Pleura
61 Membranes (cont.) Pop Quiz Answer 4.6 Which membrane contains epithelial tissue? A) Bursa B) Fascia C) Meninges D) Pleura
62 Benign and Malignant Tumors Learning Objectives 7. Explain the difference between benign and malignant tumors, and give several examples of each type. 8. Identify the most common methods of diagnosing and treating cancer.
63 Benign and Malignant Tumors (cont.) Overview Abnormal growth of cells is called a tumor or neoplasm. Types Benign Malignant (cancer)
64 Benign and Malignant Tumors (cont.) Benign Tumors Do not invade other tissues or spread to other sites Some examples: Type Description Papilloma Grows in epithelium as a projecting mass (e.g., wart) Adenoma Grows in and about glands Lipoma Originates in fat tissue Osteoma Originates in bone Myoma Tumor of muscle Angioma Tumor usually composed of small blood vessels Nevus Small usually harmless skin tumor (e.g., mole) Meningioma Originates in the linings of the brain and spinal cord Chondroma Tumor of cartilage cells
65 Benign and Malignant Tumors (cont.) Malignant Tumors Classified according to tissues of origin Carcinoma Sarcoma Leukemia Lymphoma Glioma
66 Benign and Malignant Tumors (cont.) Figure 4-9 Benign and malignant tumors.
67 Benign and Malignant Tumors (cont.) Signs of Cancer Thickening or lump Changes in the color, shape, or size of a mole Sore that does not heal Unusual bleeding or discharge Difficulty in swallowing Persistent indigestion or discomfort after eating Hoarseness or persistent cough White patches in the mouth Changes in bowel or bladder habits Unexplained weight gain or loss Feeling weak or very tired
68 Benign and Malignant Tumors (cont.) Cancer Diagnosis Microscopic study of tissue or cells Radiography Ultrasound (ultrasonography) Computed tomography (CT) Magnetic resonance imaging (MRI) Positron emission tomography (PET) Tumor marker tests Genetic tests Staging
69 Benign and Malignant Tumors (cont.) Figure 4-10 Diagnostic imaging for tumors.
70 Benign and Malignant Tumors (cont.) Cancer Treatment Treatment methods may be combined. Surgery Radiation Chemotherapy Biological therapy (immunotherapy) Hormone therapy Angiogenesis blockers
71 Benign and Malignant Tumors (cont.) Checkpoints 4-12 What is the difference between a benign and a malignant tumor? 4-13 What is a biopsy? 4-14 What are the three standard approaches to the treatment of cancer?
72 Benign and Malignant Tumors (cont.) Pop Quiz 4.7 What is another term for tumor? A) Arthritis B) Bursa C) Neoplasm D) Peritonitis
73 Benign and Malignant Tumors (cont.) Pop Quiz Answer 4.7 What is another term for tumor? A) Arthritis B) Bursa C) Neoplasm D) Peritonitis
74 Benign and Malignant Tumors (cont.) Pop Quiz 4.8 What is the removal of living tissue for microscopic examination called? A) Biopsy B) Computed tomography C) Magnetic resonance imaging D) Positron emission tomography
75 Benign and Malignant Tumors (cont.) Pop Quiz Answer 4.8 What is the removal of living tissue for microscopic examination called? A) Biopsy B) Computed tomography C) Magnetic resonance imaging D) Positron emission tomography
76 Tissues and Aging Connective tissues lose elasticity as they age. Blood vessels Tendons and ligaments Bones Muscles
77 Tissues and Aging (cont.) Figure 4-11 Atrophy of the brain.
78 Case Study Learning Objective 9. Using the case study and information in the text, describe the warning signs of cancer.
79 Case Study (cont.) Paul was diagnosed with squamous cell carcinoma. Squamous cell carcinoma may be a carcinogenic effect of sun damage on skin tissue. This case study illustrates the fact that skin cancer can be caused by frequent exposure to the sun and can be mostly prevented by wearing sunscreen outdoors and reapplying it often. It is also recommended to cover up exposed areas of the skin when outdoors.
80 Word Anatomy Learning Objective 10. Show how word parts are used to build words related to tissues, glands, and membranes.
81 Word Anatomy (cont.) Word Part Meaning Example hist/o tissue Histology is the study of tissues. Epithelial Tissue epi- on, upon Epithelial tissue covers body surfaces. pseud/o false Pseudostratified epithelium appears to be in multiple layers, but it is not. Connective Tissue blast/o immature cell, early stage of cell A fibroblast is a cell that produces fibers. chondr/o cartilage A chondrocyte is a cartilage cell. oss, osse/o bone, bone tissue Osseous tissue is bone tissue. oste/o bone, bone tissue An osteocyte is a mature bone cell. Muscle Tissue cardi/o heart The myocardium is the heart muscle. my/o muscle See preceding example.
82 Word Anatomy (cont.) Word Part Meaning Example Nervous Tissue neur/o Membranes nerve, nervous system A neuron is a nerve cell. arthr/o joint Arthritis is inflammation of the peritoneum. -itis inflammation Peritonitis is the inflammation of the peritoneum. peri- around The peritoneum wraps around the abdominal organs. pleur/o side, rib The pleurae are membranes that line the chest cavity.
83 Word Anatomy (cont.) Word Part Meaning Example Benign and Malignant Tumors aden/o gland An adenoma is a tumor of a gland. angi/o vessel An angioma is a tumor composed of small vessels. ant/i against An antineoplastic agent is a drug active against cancer. graph/o writing, record Mammography is x-ray imaging (radiography) of the breast (mamm/o). leuk/o white, colorless Leukemia is a cancer of white blood cells.
84 Word Anatomy (cont.) Word Part Meaning Example Benign and Malignant Tumors (cont.) mal- bad, disordered, diseased, abnormal A malignant tumor spreads to other parts of the body. neo- new A neoplasm is an abnormal growth of new cells, a tumor. -oma tumor, swelling An adenoma is a tumor of a gland. onc/o tumor An oncologist specializes in cancer treatment. papill/o nipple A papilloma is a projecting (nipplelike) tumor, such as a wart. ultra- beyond Ultrasound is high-frequency sound waves.
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