Kingdom Animalia Subkingdom Eumetazoa Bilateria Phylum Platyhelminthes

Save this PDF as:
 WORD  PNG  TXT  JPG

Size: px
Start display at page:

Download "Kingdom Animalia Subkingdom Eumetazoa Bilateria Phylum Platyhelminthes"

Transcription

1 Kingdom Animalia Subkingdom Eumetazoa Bilateria Phylum Platyhelminthes Professor Andrea Garrison Biology 3A Illustrations 2014 Cengage Learning unless otherwise noted

2 Phylum Platyhelminthes Flat worms (platy = flat; helminth = worm) Freshwater, marine, moist soil, parasitic Triploblastic Protostomes Bilateral w/cephalization Body dorsal-ventrally flattened Dugesia sp. Platyhelminthes; photo by Eduard Solà; 2

3 Phylum Platyhelminthes Organ systems Acoelomate Organs embedded in mesoderm Platyhelminthes 3

4 Organ systems Incomplete Y-shaped gut Ladder-like nervous system w/2 anterior ganglia Reproductive system well developed Hermaphroditic Sexual Asexual (fission) Excretory system Flame cells for osmoregulation Platyhelminthes 4

5 Phylum Platyhelminthes No respiratory or circulatory systems Diffusion Body very thin No skeletal system 2-3 muscle layers in body wall Circular, longitudinal, sometimes oblique Pseudobiceros bedfordi. Coral Sea Platyhelminthes; photo by Richard Ling; 5

6 Phylum Platyhelminthes 4 classes Turbellaria free living Trematoda endoparasites Monogenoidea ectoparasites on fish; no further discussion Cestoda endoparasites Platyhelminthes 6

7 Class Turbellaria Free living Most marine Epidermis produces cilia and mucus Locomotion Glide on mucus using muscles and cilia Swim via undulating muscle movements Chemo- and tactile sensors all over body Ocelli Light sensitive Dugesia sp. Platyhelminthes; top photo by Eduard Solà; 7

8 Class Turbellaria Digestive tract Mouth in center of ventral surface Pharynx leads to Y-shaped gut Varying degrees of branching Wrap body around prey Pharynx sucks up bits of food Intestine releases digestive enzyme for extracellular digestion Phagocytes in gastrodermis engulf food Digestion completed inside cells of gastrodermis Platyhelminthes 8

9 Class Turbellaria Reproduction Sexual Copulate w/ another individual Both fertilized by the other Platyhelminthes 9

10 Classes Trematoda & Cestoda Parasitic flatworms Platyhelminthes 10

11 Parasitic Lifestyle Parasitism special physical/nutritional relationship (symbiosis) where one organism benefits and the other is harmed What makes a good parasite? Don t kill host No place else to live May weaken host Adaptations for living on/in host Often have elaborate life cycles Platyhelminthes 11

12 Adaptations for Parasitism Don t kill host directly Hooks/suckers for attachment Extensive reproductive system chances of offspring surviving Endoparasites Glands for penetrating tissues and/or encysting when environment not good Intestinal parasites Tough integument Simple digestive tract Life cycles with many hosts Platyhelminthes 12

13 Parasitic Life Cycle Often multiple hosts Hosts may be from very different phyla Each stage of parasite life cycle often require very specific genus or species of host Definitive host Parasite reaches final stage of development Sexual reproduction occurs here Intermediate host(s) Various stages of the parasite life cycle live in these hosts May be the vector of transmission to final host Platyhelminthes 13

14 Preventing Parasitic Diseases Can treat parasitic diseases like liver flukes, trichinosis Done as the disease arises in the population Prevent parasitic diseases by preventing/avoiding presence of the intermediate hosts Far better for human health Platyhelminthes 14

15 Class Trematoda Flukes Endoparasites; liver, blood, lungs, gut of vertebrates Multihost life cycle Poorly developed sense organs 2 suckers for attachment Oral and ventral Mouth at anterior end Gut with 2 branches Opisthorchis sinensis (=Clonorchis sinensis, Chinese liver fluke) Platyhelminthes 15

16 Class Trematoda Chinese Liver Fluke Common in Asia Definitive hosts humans, cats, dogs, pigs Hermaphroditic Cause: eating raw or undercooked fish, crab Can severely damage liver (cirrhosis) Opisthorchis sinensis (=Clonorchis sinensis, Chinese liver fluke) Platyhelminthes 16

17 Class Trematoda Chinese Liver Fluke Platyhelminthes; 17

18 Class Trematoda Blood Flukes 3 Schistosoma sp. Disease = schistosomiasis Major infectious disease worldwide Cause: working or swimming in infested water Definitive hosts Humans, dogs, cats, rodents, pigs, horse and goats Blood flukes not hermaphroditic Male much larger Female smaller and lives in grove on ventral surface of male Platyhelminthes 18

19 Class Trematoda Schistosomiasis Platyhelminthes: 19

20 Class Trematoda Schistosomiasis Swimmer s itch (cercarial dermatitis or Schistosoma dermatitis) If aquatic larval stage burrows into host of wrong species, it will die Humans may have an allergic reaction to the dead parasite Rash, itching Platyhelminthes 20

21 Class Cestoda Tapeworms Endoparasites; intestines of vertebrates Multihost life cycle No sensory organs Do have sensory receptors in integument Platyhelminthes 21

22 Class Cestoda No gut External body surface covered with microscopic projections Enlarge surface area for absorption Body with proglottids Repeated segments of reproductive structures Hermaphroditic Thousands of fertilized eggs in each Platyhelminthes 22

23 Class Cestoda Scolex at anterior end Hooks and suckers for attachment to intestinal wall Platyhelminthes 23

24 Class Cestoda Life Cycle At least two hosts Definitive host is vertebrate Intermediate host may be invertebrate or vertebrate Infections usually have few symptoms One species can migrate to brain and cause seizures Taenia sp. Eating undercooked beef or pork Crowded, unsanitary conditions Platyhelminthes 24

25 Class Cestoda Taenia sp. Platyhelminthes; 25

26 Class Cestoda Echinococcus Echinococcus granulosis Definitive host dogs eat infected meat raw Intermediate host sheep, goats, swine, cattle, horses, camels Larvae migrate to organs (esp. liver, lungs) Humans in contact with dogs may accidentally ingest eggs Hydatidosis Damage to liver, lungs, heart, bones Platyhelminthes 26

27 Class Cestoda Echinococcus Platyhelminthes 27

Pop Quiz 2. Give the dominant body form for each. List 2 causes of coral reef damage. What is the function of a colloblast? Scyphozoa anthozoa

Pop Quiz 2. Give the dominant body form for each. List 2 causes of coral reef damage. What is the function of a colloblast? Scyphozoa anthozoa Pop Quiz 2 Give the dominant body form for each Scyphozoa anthozoa List 2 causes of coral reef damage. What is the function of a colloblast? Phylum Platyhelminthes Flatworms - the Simplest Bilateral Animals

More information

An Introduction to the Invertebrates, Part Two Platyhelminthes & Rotifers. Reference: Chapter 33.3, 33.4

An Introduction to the Invertebrates, Part Two Platyhelminthes & Rotifers. Reference: Chapter 33.3, 33.4 An Introduction to the Invertebrates, Part Two Platyhelminthes & Rotifers Reference: Chapter 33.3, 33.4 Quick Protist Review v Are protists monophyletic, paraphyletic, or polyphyletic? v What are protozoa?

More information

Flatworms. Phylum Platyhelminthes

Flatworms. Phylum Platyhelminthes Flatworms Phylum Platyhelminthes Characteristics of Flatworms Flatworms are acoelomates, which means they have no coelom. A coelom is a fluid-filled body cavity The digestive cavity is the only body cavity

More information

Platyhelminthes. Presentation by Brendan, John, and Kunio Period 6 3/12/10. Slide by Brendan

Platyhelminthes. Presentation by Brendan, John, and Kunio Period 6 3/12/10. Slide by Brendan Platyhelminthes Presentation by Brendan, John, and Kunio Period 6 3/12/10 http://www-tc.pbs.org/kcet/shapeoflife/imganim/platyhelminthes5.jpg Slide by Brendan Intro Phyla: Platyhelminthes (Flatworms) marine,

More information

Notes - Platyhelminthes and Nematodes

Notes - Platyhelminthes and Nematodes Notes - Platyhelminthes and Nematodes - These two phylum are composed of. However, the worms we are going to look at are not common. Both of these phyla are composed of unsegmented worms. That is, these

More information

Unit 3: Phylums: Platyhelminthes, Nematoda, and Rotifera

Unit 3: Phylums: Platyhelminthes, Nematoda, and Rotifera Invertebrate Zoology (Study Guide for Test) Unit 3: Phylums: Platyhelminthes, Nematoda, and Rotifera Objective 1: Describe the form and function of flatworms 1) Describe the characteristics of the following

More information

Chapter 5 PHYLUM PLATYHELMINTHES

Chapter 5 PHYLUM PLATYHELMINTHES Chapter 5 PHYLUM PLATYHELMINTHES Phylum Platyhelminthes (Flat worms) One class is free living (Turbellaria) and most are parasitic, some commensals Tribloblastic bilaterally symmetrical dorsoventrally

More information

16/12/2012. The Flatworms. Characteristics

16/12/2012. The Flatworms. Characteristics Learning Outcome G3 Learning Outcome G3 Analyze the increasing complexity of the Phylum Platyhelminthes, the Phylum Nematoda and the Phylum Annelida Phylum Platyhelminthes, Nematoda and Annelida Student

More information

Phylum Platyhelminthes

Phylum Platyhelminthes Phylum Platyhelminthes Class? Dugesia (planaria, non-parasitic flatworm) Class? Liver fluke Class? Tapeworm Phylum Platyhelminthes Class Turbellaria Dugesia (planaria, non-parasitic flatworm) Class Trematoda

More information

Chapter Guided Notes

Chapter Guided Notes Chapter 34-35 Guided Notes 34.1 Phylum Platyhelminthes Flatworms Invertebrates w/ soft, symmetry 3 tissue layers organized into organs & systems Exhibit Planaria Freshwater -shaped anterior and a posterior

More information

Position and Biological Contributions Phylum Platyhelminthes Simplest animals with primary bilateral symmetry Solid body without a coelom Organ-system

Position and Biological Contributions Phylum Platyhelminthes Simplest animals with primary bilateral symmetry Solid body without a coelom Organ-system Acoelomate Chapter 14 Bilateral Acoelomates No internal body space other than digestive tube. Spaces between organs filled with a loose connective tissue with more cells than mesoglea = parenchyma. Solid

More information

Sponges, Cnidarians, and Worms

Sponges, Cnidarians, and Worms Sponges, Cnidarians, and Worms Section 1: What is an animal? Multicellular that feed on other organisms STRUCTURE- levels of organization of cells 1. Cells- basic unit of animal structure 2. Tissues- many

More information

Introduction to Multicellular Parasites

Introduction to Multicellular Parasites Harriet Wilson, Lecture Notes Bio. Sci. 4 - Microbiology Sierra College Introduction to Multicellular Parasites Multicellular parasites are eukaryotic organisms in the Kingdom Animalia (like us). Though

More information

Introduction. Causes. Roundworms. Worms. Flatworms. How Flatworms are transmitted. Fast fact. Fast fact

Introduction. Causes. Roundworms. Worms. Flatworms. How Flatworms are transmitted. Fast fact. Fast fact Module 5 Worms MODULE 5 INTRODUCTION Introduction Worms Worms or helminths are parasites that live on or in human or animal hosts and draw nutrients from their host 1. Worms are multi-cellular, have complex

More information

HELMINTHS CESTODES (tapeworms)

HELMINTHS CESTODES (tapeworms) Microbiology HELMINTHS CESTODES (tapeworms) Introduction to Parasites The eggs of cestodes as mentioned before have a striated outer covering. Inside the egg, there is a rounded embryo with six hooks.

More information

Blastocoelomates, Continued

Blastocoelomates, Continued Blastocoelomates, Continued General Characteristics 1. Triploblastic, bilaterally symmetrial, unsegmented animals. 2. Microscopic a. 400-500 spp b. marine, freshwater, primarily interstitial. a. Elongate,

More information

Platyhelminthes. BIO2135 Animal Form and Function. Page 1. Extant Animalia ~1,300,000 species. Platyhelminthes An acoelomate triploblast.

Platyhelminthes. BIO2135 Animal Form and Function. Page 1. Extant Animalia ~1,300,000 species. Platyhelminthes An acoelomate triploblast. An acoelomate triploblast Extant Animalia ~1,300,000 species Parazoa (1.2%) Radiata (0.9%) Protostomia (3.9%) Platyzoa (2.2%) (1.9%) Others (0.3%) Lophotrochozoa (9.8%) (8.5%) (0.9%) Others (0.5%) Ecdysozoa

More information

Flatworms, Nematodes, and

Flatworms, Nematodes, and Flatworms, Nematodes, and Arthropods Bởi: OpenStaxCollege The animal phyla of this and subsequent modules are triploblastic and have an embryonic mesoderm sandwiched between the ectoderm and endoderm.

More information

Acoelomate Animals. Phylum Platyhelminthes (Flatworms) à organs are embedded in tissue, not in any body space (like us)

Acoelomate Animals. Phylum Platyhelminthes (Flatworms) à organs are embedded in tissue, not in any body space (like us) Acoelomate Animals several phyla including Platyhelminthes share the following characteristics: 1. have 3 true embryonic tissue layers (=triploblastic): ectoderm mesoderm endoderm between epidermis and

More information

KIDSPIRATION by Riedell

KIDSPIRATION by Riedell WORM DISSECTION KIDSPIRATION by Riedell CLASSIFICATION Kingdom: Phylum: ANIMALIA Annelida little rings Class: OLIGOCHAETA few bristles SETA (plural: setae) BRISTLES on VENTRAL surface http://www.pgjr.alpine.k12.ut.us/science/whitaker/animal_kingdom/earthworm/earthworm.html

More information

Wormlike:

Wormlike: Flatworms and Ribbon Worms Note: These links do not work. Use the links within the outline to access the mages in the popup windows. This text is the same as the scrolling text in the popup windows.. Why

More information

AGRIC SCIENCE (WEEK 5) Squatting of the bird with head tucked under the wings

AGRIC SCIENCE (WEEK 5) Squatting of the bird with head tucked under the wings AGRIC SCIENCE (WEEK 5) PROTOZOAN DISEASES CONTINUED Symptoms of Coccidiosis 1. Closing of eyes Prevention Squatting of the bird with head tucked under the wings - Maintain good hygiene - Prevent animals

More information

Contribution of Animals. Many provide food for us and other animals. Clothing and shoes are sometimes made from animal products

Contribution of Animals. Many provide food for us and other animals. Clothing and shoes are sometimes made from animal products 1 2 Contribution of Animals Many provide food for us and other animals Clothing and shoes are sometimes made from animal products Research shows that holding or petting a cat or dog slows the heartbeat

More information

Worksheet for Morgan/Carter Laboratory #19 Animals II Nematoda, Arthropoda, Echinodermata and Chordata

Worksheet for Morgan/Carter Laboratory #19 Animals II Nematoda, Arthropoda, Echinodermata and Chordata Worksheet for Morgan/Carter Laboratory #19 Animals II Nematoda, Arthropoda, Echinodermata and Chordata BE SURE TO CAREFULLY READ THE INTRODUCTION PRIOR TO ANSWERING THE QUESTIONS!!! You will need to refer

More information

Platyhelminthes (flat worms) as parasites of medical interest

Platyhelminthes (flat worms) as parasites of medical interest Platyhelminthes (flat worms) as parasites of medical interest Type of parasites Protozoa Helminths Arthropods Nematodes Trematodes Cestodes Platyhelminthes A simplified classification of flat worms Platyhelminthes

More information

PHYLUM NEMATODA. Introduction. Ascaris lubricoides. External anatomy - preserved specimen. Internal anatomy - preserved specimen

PHYLUM NEMATODA. Introduction. Ascaris lubricoides. External anatomy - preserved specimen. Internal anatomy - preserved specimen PHYLUM NEMATODA Introduction Commonly called round worms the phylum includes both free living and parasitic forms. Distinctive features include: a nearly perfect cylindrical body, radial or biradial arrangement

More information

Trichinellosis. By Michelle Randall

Trichinellosis. By Michelle Randall Trichinellosis By Michelle Randall Disease Name: Trichinellosis Etiological Agent: Trichinella spiralis Transmission: People acquire Trichinellosis by consuming raw or undercooked meat infected with the

More information

Class Digenea (Trematoda) - The Flukes

Class Digenea (Trematoda) - The Flukes Class Digenea (Trematoda) - The Flukes A. The information on the Platyhelminthes provided in the previous section should be reviewed, as it still applies. B. Adult trematodes are parasites of vertebrates.

More information

Biology Earthworm Dissection

Biology Earthworm Dissection Biology 521 - Earthworm Dissection Kingdom Phylum Class Order Genus Species Animalia Annelida Oligochaeta Haplotaxida Lumbricus L. terrestris PRELAB: The earthworm is an excellent organism to study as

More information

Parasites are found in all groups of organisms

Parasites are found in all groups of organisms Parasites are found in all groups of organisms Parasites a very diverse set of eukaryotic pathogens Parasitology as a scientific discipline historically covers a diverse collection of multi- and unicellular

More information

Introduction to the helminth parasites. Why are helminths important? Lecture topics. Morphology. BVM&S Parasitology Tudor W Jones

Introduction to the helminth parasites. Why are helminths important? Lecture topics. Morphology. BVM&S Parasitology Tudor W Jones Taxonomic Relationships of the Helminth Parasites Parasitic Helminths Introduction to the helminth parasites BVM&S Parasitology Tudor W Jones Platyhelminthes "Flatworms" Trematodes "Flukes" Cestodes "Tapeworms"

More information

The Anatomy of the Earthworm

The Anatomy of the Earthworm Carolina Biological Supply Company presents The Anatomy of the Earthworm 2700 York Road Box 187 Burlington, North Carolina 27215 Gladstone, Oregon 97027 Abstract. This program facilitates a study of the

More information

2. Identify the 4 major trends in the evolution of animals. 3. Describe the differences between a protostome and a deuterostome.

2. Identify the 4 major trends in the evolution of animals. 3. Describe the differences between a protostome and a deuterostome. ANIMAL KINGDOM 1 EVOLUTIONARY TRENDS and PHYLUM PORIFERA 1. Describe the biological definition for an animal. 2. Identify the 4 major trends in the evolution of animals. 3. Describe the differences between

More information

Zoology. Lab Guide. Exercise 16A Class Asteroidea Sea Stars

Zoology. Lab Guide. Exercise 16A Class Asteroidea Sea Stars Zoology Exercise #16: Echinoderms Lab Guide STARFISH ONLY!!! Echinoderms contain the sea stars, brittle stars, sea urchins, sand dollars, and sea cucumbers. The name echinoderm is derived from this group

More information

GENERAL LIFE CYCLE AND LARVAL FORMS IN CESTODES

GENERAL LIFE CYCLE AND LARVAL FORMS IN CESTODES GENERAL LIFE CYCLE AND LARVAL FORMS IN CESTODES Generally, cestode life cycles are not as complicated as those of digeneans because they usually do not involve asexually reproductive larval phases. However,

More information

The Triploblastic, Acoelomate Body Plan

The Triploblastic, Acoelomate Body Plan mil28207_ch10_156-174.qxd 6/16/09 4:54 AM Page 156 10 The Triploblastic, Acoelomate Body Plan Outline Evolutionary Perspective Phylum Acoelomorpha Phylum Platyhelminthes: Flatworms Are Acoelomate with

More information

5 examples of parasitism in animals. 5 examples of parasitism in animals.zip

5 examples of parasitism in animals. 5 examples of parasitism in animals.zip 5 examples of parasitism in animals 5 examples of parasitism in animals.zip 12/10/2017 Parasitic Relationships. A few examples of parasites are Some scientists say that one-celled bacteria and viruses

More information

Purpose: To observe the different structures of a male and female Ascaris lumbricoides.

Purpose: To observe the different structures of a male and female Ascaris lumbricoides. Biology 1 Name: Pre-lab Discussion: There are over 15,000 species in the Phylum Nematoda. They are round, unsegmented worms. Members of this phylum are free-living or parasitic. The parasitic species can

More information

Downloaded from

Downloaded from A.I.P.M.T. Foundation - XI Biology MCQs Time: 30 min MCQ#10 Full Marks: 40 Choose the most appropriate answer. 1. Which of the following is the asexual method of reproduction in Protozoa? 1. Isogamy 2.

More information

LABORATORY EXERCISE 4 PHYLUM PLATYHELMINTHES

LABORATORY EXERCISE 4 PHYLUM PLATYHELMINTHES GENUS PLANARIA Planaria sp. Lab 4, pg 1 LABORATORY EXERCISE 4 PHYLUM PLATYHELMINTHES With a soft brush, place a live Planaria in a small dish with a few millimeters of pond water. BEHAVIOR. Examine the

More information

Zoology Name: Block: Exercise #8: The Radiate Animals, Phylum Cnidaria Lab Guide

Zoology Name: Block: Exercise #8: The Radiate Animals, Phylum Cnidaria Lab Guide Zoology Name: Block: Exercise #8: The Radiate Animals, Phylum Cnidaria Lab Guide These animals are called radiates because all are radially (or biradially) symmetrical, a form of symmetry in which body

More information

Biology 5-1: Animal Systems I

Biology 5-1: Animal Systems I Name: Period: Biology 5-1: Animal Systems I Assignments: Description Page(s) Due Date 1 Biology 4 th & 5 th Six Weeks MONDAY TUESDAY WEDNESDAY THURSDAY FRIDAY Feb 9 10 11 12 13 Review for Test Test - Classification

More information

Infectious Disease. Unit 6 Lesson 1

Infectious Disease. Unit 6 Lesson 1 Infectious Disease Unit 6 Lesson 1 Reminder Getting Started Pick up your Infectious Disease Notes Objectives Identify five types of infectious agents Describe ways in which infections can spread Explain

More information

Bio & 241 A&P Unit 1 / Lecture 3

Bio & 241 A&P Unit 1 / Lecture 3 Bio & 241 A&P Unit 1 / Lecture 3 Tissues All body tissues arise from three fundamental embryonic tissues. Endoderm: forms epithelial tissues lining internal organs such as the GI tract Mesoderm: connective

More information

Alberta Health and Wellness Public Health Notifiable Disease Management Guidelines August 2011

Alberta Health and Wellness Public Health Notifiable Disease Management Guidelines August 2011 August 2011 Trichinosis Revision Dates Case Definition Reporting Requirements Remainder of the Guideline (i.e., Etiology to References sections inclusive) August 2011 August 2011 October 2005 Case Definition

More information

Phylum Echinodermata

Phylum Echinodermata Phylum Echinodermata Spiny Skin Echinodermata Radially symmetrical in five ways (pentamerous) Echinodermata No head, right or left side, or top or bottom, so we refer to the oral surface (mouth side) and

More information

B17 instructions for 227. April 15, 2011

B17 instructions for 227. April 15, 2011 Microviewer 227: Comparative Digestive Systems Introduction This set is one of a series of lessons examining comparative life function systems. In these sets, you will examine slides of different animals,

More information

NOTES: CH 40 Introduction to Human Anatomy & Physiology

NOTES: CH 40 Introduction to Human Anatomy & Physiology NOTES: CH 40 Introduction to Human Anatomy & Physiology THE HUMAN BODY Anatomy Physiology (= structures) (= functions or processes) Characteristics of LIFE: 1) Made up of 1 or more CELLS. 2) Obtain and

More information

Ch41 Animal Nutrition

Ch41 Animal Nutrition Ch41 Animal Nutrition Digestive system Purpose = break down food into smaller nutrients to be used in the body for energy and raw materials for biosynthesis Overview of food processing Ingestion: act of

More information

Lecture 1: Overview of Medical Parasitology #AsturiaNOTES Parasitology: Introduction to Parasitology

Lecture 1: Overview of Medical Parasitology #AsturiaNOTES Parasitology: Introduction to Parasitology Human Parasitology The study of organisms which are parasitic to humans. In the broadest sense of parasitology which is anything parasitic to humans therefore, it includes study of: o Viruses o Bacteria

More information

Sponges, Cnidarians, Worms, and Mollusks. Preteach

Sponges, Cnidarians, Worms, and Mollusks. Preteach 3 Sponges, Cnidarians, Worms, and Section 3 Sponges, Cnidarians, Worms, and Reading Preview Key Concepts of sponges? of cnidarians? of each phylum of worms? of the major groups of mollusks? Key Terms larva

More information

Histology Notes -Part 1: Epithelial Tissues

Histology Notes -Part 1: Epithelial Tissues Introduction Group of cells w/ similar structure & function = TISSUE Four Basic Tissue Types 1. Epithelial-covers 2. Connective-supports 3. Muscular*-produces movement (will discuss in the muscular system

More information

Amphibian Parasites. Lecture Outline. What is a parasite? Nikki Maxwell University of Tennessee 4 March 2008

Amphibian Parasites. Lecture Outline. What is a parasite? Nikki Maxwell University of Tennessee 4 March 2008 Amphibian Parasites Nikki Maxwell University of Tennessee 4 March 2008 Lecture Outline Overview of different types of amphibian parasites Current information on mechanisms and effects of each type of parasite

More information

CRAYFISH DISSECTION. Image from:

CRAYFISH DISSECTION. Image from: CRAYFISH DISSECTION Image from: http://www.mackers.com/crayfish/ ARTHROPODA jointed foot Arthro = joint pod = foot Animal Groups Image from: http://ology.amnh.org/biodiversity/treeoflife/pages/graph.html

More information

Arthropods have segmented bodies and tough exoskeletons with jointed appendages.

Arthropods have segmented bodies and tough exoskeletons with jointed appendages. Section 1: Arthropods have segmented bodies and tough exoskeletons with jointed appendages. K What I Know W What I Want to Find Out L What I Learned Essential Questions What is the importance of exoskeletons,

More information

WHAT IS AN INSECT EXTERNAL ANATOMY GROWTH AND DEVELOPMENT INTERNAL ANATOMY & PHYSIOLOGY

WHAT IS AN INSECT EXTERNAL ANATOMY GROWTH AND DEVELOPMENT INTERNAL ANATOMY & PHYSIOLOGY WHAT IS AN INSECT EXTERNAL ANATOMY GROWTH AND DEVELOPMENT INTERNAL ANATOMY & PHYSIOLOGY Body divided into three regions HEAD the head capsule is a sturdy compartment that houses the brain, a mouth opening,

More information

OPTIONAL GRADE 8 STUDY PACKET IMMUNE SYSTEM SC.6.L.14.5 AA

OPTIONAL GRADE 8 STUDY PACKET IMMUNE SYSTEM SC.6.L.14.5 AA OPTIONAL GRADE 8 STUDY PACKET IMMUNE SYSTEM SC.6.L.14.5 AA SC.6.L.14.5 AA Identify and investigate the general functions of the major systems of the human body (digestive, respiratory, circulatory, reproductive,

More information

6) An animal with the cross section shown above has a: a) Gastrovascular cavity b) Pseudocoelom c) Coelom

6) An animal with the cross section shown above has a: a) Gastrovascular cavity b) Pseudocoelom c) Coelom 1) A 12 foot tall human: a) Would need a disproportionally larger and stronger skeleton than a 6 foot tall human b) Would need a disproportionally smaller and weaker skeleton than a 2 foot tall human c)

More information

Helminths in tropical regions

Helminths in tropical regions Helminths in tropical regions Schistosoma spp. Blood flukes Schistosomiasis is one of the most widespread parasitic infections in humans Humans are the principal hosts for: Schistosoma mansoni, Schistosoma

More information

Schistosomiasis (Bilharzia, Snail fever) Trematode (Fluke)

Schistosomiasis (Bilharzia, Snail fever) Trematode (Fluke) Schistosomiasis (Bilharzia, Snail fever) Trematode (Fluke) Sina Helbig*, Alia Tayea, Akre M Adja, Neil Arya ** Prepared as part of an education project of the Global Health Education Consortium and collaborating

More information

Parasitology lab. ü interdiction

Parasitology lab. ü interdiction Parasitology lab ü interdiction "Humans are hosts to nearly 300 species of parasitic worms and over 70 species of protozoa, some derived from our primate ancestors and some acquired from the animals we

More information

CRAYFISH DISSECTION. Image from:

CRAYFISH DISSECTION. Image from: CRAYFISH DISSECTION Image from: http://www.mackers.com/crayfish/ Animal Groups Image from: http://ology.amnh.org/biodiversity/treeoflife/pages/graph.html ARTHROPODA jointed foot Arthro = joint pod = foot

More information

WORLD HEALTH ORGANIZATION. Control of neurocysticercosis

WORLD HEALTH ORGANIZATION. Control of neurocysticercosis WORLD HEALTH ORGANIZATION FIFTY-SIXTH WORLD HEALTH ASSEMBLY A56/10 Provisional agenda item 14.2 6 March 2003 Control of neurocysticercosis Report by the Secretariat BACKGROUND 1. Cysticercosis of the central

More information

Cell and Tissue Types. Epithelial, Connective, Muscle, Nerve

Cell and Tissue Types. Epithelial, Connective, Muscle, Nerve Cell and Tissue Types Epithelial, Connective, Muscle, Nerve Objectives Explain the major stages of the cell cycle and cellular division (mitosis). Describe specific events occurring in each of the phases

More information

Pathogens. How Do They Cause Disease?

Pathogens. How Do They Cause Disease? Pathogens How Do They Cause Disease? A. Pathogens I. Overview 1. definition: a disease-causing agent a. disease: a disturbance in the state of health such that the affected organism experiences some loss

More information

Intestinal Parasites. James Gaensbauer MD, MScPH Fellow, Pediatric Infectious Diseases University of Colorado School of Medicine November 12, 2012

Intestinal Parasites. James Gaensbauer MD, MScPH Fellow, Pediatric Infectious Diseases University of Colorado School of Medicine November 12, 2012 Intestinal Parasites James Gaensbauer MD, MScPH Fellow, Pediatric Infectious Diseases University of Colorado School of Medicine November 12, 2012 Outline Parasites 101 Global Burden of Disease An Evolutionary

More information

Study of different tissues Abnormal cells and tissues can be compared to normal tissues to identify disease, such as cancer Being able to know and

Study of different tissues Abnormal cells and tissues can be compared to normal tissues to identify disease, such as cancer Being able to know and CHAPTER 4 Study of different tissues Abnormal cells and tissues can be compared to normal tissues to identify disease, such as cancer Being able to know and recognize normal tissues under the microscope

More information

THE IMMUNE SYSTEM Chapter 40 (Miller & Levine)

THE IMMUNE SYSTEM Chapter 40 (Miller & Levine) THE IMMUNE SYSTEM Chapter 40 (Miller & Levine) 40 1 Infectious Disease A. How Diseases Are Spread 1. Vectors animals that carry disease-causing organisms from person to person (ticks, mosquitos, other

More information

Disease: any change, other than an injury, that disrupts homeostasis. Pathogen: disease-causing agent such as bacteria, virus, etc.

Disease: any change, other than an injury, that disrupts homeostasis. Pathogen: disease-causing agent such as bacteria, virus, etc. The Immune System Disease: any change, other than an injury, that disrupts homeostasis. Pathogen: disease-causing agent such as bacteria, virus, etc. Infectious disease- caused by pathogen Germ theory

More information

INTRODUCTION TO PARASITOLOGY OBJECTIVES/RATIONALE

INTRODUCTION TO PARASITOLOGY OBJECTIVES/RATIONALE INTRODUCTION TO PARASITOLOGY OBJECTIVES/RATIONALE Parasitology is the study of organisms that derive their nourishment from other living things and cause damage. The student will identify the morphology

More information

Viruses. Objectives At the end of this sub section students should be able to:

Viruses. Objectives At the end of this sub section students should be able to: Name: 3.5 Responses to Stimuli Objectives At the end of this sub section students should be able to: 3.5.4 Viruses 1. Explain the problem of defining what a virus is - living or non-living? 2. show you

More information

GCE AS/A level 1072/01 BIOLOGY BY2

GCE AS/A level 1072/01 BIOLOGY BY2 Surname Other Names Centre Number 2 Candidate Number GCE AS/A level 1072/01 BIOLOGY BY2 P.M. THURSDAY, 26 May 2011 1 1 2 hours For s use Question Maximum Mark 1 6 2 8 3 8 4 10 5 7 6 11 7 10 8 10 Total

More information

31-2. The Earthworm. . Relate the structure of systems. . Demonstrate dissection technique. . Identifythe major advancesof

31-2. The Earthworm. . Relate the structure of systems. . Demonstrate dissection technique. . Identifythe major advancesof Name Class Date INVESTIGATION 31-2 The Earthworm Introduction The earthworm is a segmented worm. It exhibits more complex structures than any of the more primitive animals that you have studied thus far.

More information

Tissues. Definition. A group of similar cells and their intercellular substances specialized to perform a specific function.

Tissues. Definition. A group of similar cells and their intercellular substances specialized to perform a specific function. Chapter 4 - Tissues Tissues Definition A group of similar cells and their intercellular substances specialized to perform a specific function. Tissues Epithelial covers exposed surfaces, lines internal

More information

James Gaensbauer, MD MScPH October 18, 2016

James Gaensbauer, MD MScPH October 18, 2016 James Gaensbauer, MD MScPH October 18, 2016 Pediatric Infectious Diseases, University of Colorado School of Medicine Center for Global Health, Colorado School of Public Health Denver Health Hospital Authority

More information

Biology 20 Laboratory Animal Reproduction

Biology 20 Laboratory Animal Reproduction Biology 20 Laboratory Animal Reproduction OBJECTIVE To study the various types of reproduction. To differentiate between asexual and sexual reproduction. To observe sperm, ova and the fertilization process

More information

Pick a cell that isn t yours!

Pick a cell that isn t yours! Pick a cell that isn t yours! Quiz 1: Introduction and Cells Module 2: Histology The study of tissues This module is very visual! Know these images! Introduction www.quizlet.com is a very useful tool for

More information

Osmoregulation regulates solute concentrations and balances the gain and loss of water

Osmoregulation regulates solute concentrations and balances the gain and loss of water Ch 44 Osmoregulation & Excretion Osmoregulation regulates solute concentrations and balances the gain and loss of water Freshwater animals show adaptations that reduce water uptake and conserve solutes

More information

Tissues. tissue = many cells w/ same structure and function. cell shape aids its function tissue shape aids its function

Tissues. tissue = many cells w/ same structure and function. cell shape aids its function tissue shape aids its function Tissues tissue = many cells w/ same structure and function cell shape aids its function tissue shape aids its function Histology = study of tissues 4 types of tissues Epithelial coverings contact openings

More information

Your Goal. Animal s Urinary and Osmoregulatory systems. Paragraph 1: Introduction Goal introduce the paper. Paragraph 1: Introduction

Your Goal. Animal s Urinary and Osmoregulatory systems. Paragraph 1: Introduction Goal introduce the paper. Paragraph 1: Introduction Your Goal Animal s Urinary and Osmoregulatory systems l Be able to tell the story of kidney evolution as an essay. Maintenance Introduction Goal introduce the paper l Homeostasis is the of Maintenance

More information

M I C R O B I O L O G Y WITH DISEASES BY TAXONOMY, THIRD EDITION

M I C R O B I O L O G Y WITH DISEASES BY TAXONOMY, THIRD EDITION M I C R O B I O L O G Y WITH DISEASES BY TAXONOMY, THIRD EDITION Chapter 14 Infection, Infectious Diseases, and Epidemiology Lecture prepared by Mindy Miller-Kittrell, University of Tennessee, Knoxville

More information

Communicable and Noncommunicable. Diseases

Communicable and Noncommunicable. Diseases Communicable and Noncommunicable Diseases After this lesson you will be able to: Compare and contrast between noncommunicable and communicable diseases Define the common pathogens that cause communicable

More information

Control of Predacious Flatworms Macrostomum sp. in Culturing Juvenile Freshwater Mussels

Control of Predacious Flatworms Macrostomum sp. in Culturing Juvenile Freshwater Mussels North American Journal of Aquaculture 65:28 32, 23 Copyright by the American Fisheries Society 23 Control of Predacious Flatworms Macrostomum sp. in Culturing Juvenile Freshwater Mussels LORA L. ZIMMERMAN

More information

By Lucy Simpson and Taylor Meyers

By Lucy Simpson and Taylor Meyers By Lucy Simpson and Taylor Meyers Two Types of Immunity Innate immunity- Innate immunity consists of external barriers formed by the skin and mucous membranes, plus a set of internal cellular and chemical

More information