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1

Types of Metazoa parasites

cestodes, trematodes, nematodes

2

What are cestodes?

tape worms

3

How many parts do tape worms have?

2- rounded head and flat body of multiple segments

4

What is the rounded head of the tape worm known as?

Scolex

5

What is the flat body of multiple segments of the tape worm called?

proglotids

6

What is the host of tape worms?

human

7

4 types of tape worms?

pork, beef, fish, and dog tape worms

8

What do pork tape worms cause?

disease known as cysticircosis in humans

9

Define cysticerci

name of larvae in pork

10

What happens when humans swallow eggs?

larval form cysticerci develop in various organs like brain and eye where they encyst

11

What will happen when the cysticerci is in brain

mimic brain tumors and causes headache, vomiting, seizures

12

What will happen when cysticerci is in the eye?

may cause uveitis and retinitis

13

Where is the pork tape worm most common?

Asia, S. America and eastern Europe

14

Treatment for adult pork tape worms

Praziquintal

15

Treatment for cysticercosis from pork tape worms

surgical excision

16

Transmission of beef tape worm

humans infected by eating under cooked beef containing larvae

17

Who is the host of beef tape worm?

human

18

Who is the intermediate host of beef tape worm?

cattle

19

Where is beef tape worm commonly found?

Africa, S. America and Eastern Europe

20

Clinical features of beef tape worm?

adult worms do not cause symptoms- proflatids protrude through anus

21

Treatment for beef tape worm?

Praziquental

22

Transmission of fish tape worm?

eating raw/uncooked fish containing larvae

23

Symptoms for adult worm fish tape worm

asymptomatic- may produce anemia due to B12 deficiency

24

What does dog tape worm cause?

hydatid cyst in humans

25

Who is the definitive host in dog tape worm?

dog

26

What is the intermediate host for dog tape worm?

sheep

27

What is the dead and intermediate host of dog tape worm?

human

28

Transmission of dog tape worm

worms in the dog liberate thousands of eggs- ingested by sheep or human and embryo emerges into intestine and migrates to liver, lung, bone and brain

29

Where do the large fluid filled hydatid cyst develop in the body?

brain, lung, liver

30

What does hydatid cyst cause?

causing pressure effects on tissue