Parasitology Quiz 4

Question 1

What life cycles do tapeworms have?

Answer 1

indirect - metacestodes (larvae) are extra intestinal in intermediate hosts

Question 2

What is characteristic of the scolex of cestodes?

Answer 2

4 suckers (cyclophyllidea) or 2 bothria (longitudinal grooves that attach)

Question 3

What is the name for mature segments of the cestodes?

Answer 3

strobila - the whole chain (proglottids - individual segments)

Question 4

What is the family of all the parasites on this quiz?

Answer 4

cyclophyllidea - circular sucker

Question 5

What is the dome like projection at the apex of the scolex called?

Answer 5

rostellum

Question 6

What is the term for the fully developed cestode eggs containing first stage larvae?

Answer 6

oncosphere

Question 7

What is the term for a single fluid filled cyst with one attached, invaginated scolex?

Answer 7

cysticercus (protoscolex)

Question 8

What is the term for a fluid filled cyst with many invaginated scolices?

Answer 8

coenurus

Question 9

What is the term for a cysticercus with an evaginated scolex? (asexual proglottids)

Answer 9

strobilocercus

Question 10

Which family requires 2 intermediate hosts?

Answer 10

mesocestoididae

Question 11

What are the direct hosts of taeniidae cestodes?

Answer 11

carnivores or humans

Question 12

What are the intermediate hosts of taeniidae cestodes?

Answer 12

prey of the DH

Question 13

What are the DH and IH of Taenia pisiformis?

Answer 13

DH - canids and wild carnivores

IH - rabbits and hares

Question 14

What are the DH and IH of Taenia ovis?

Answer 14

DH - canids and wild carnivores

IH - sheep

Question 15

What are the IH of Taenia hydatigena?

Answer 15

cattle, sheep, swine, some wild ungulates

Question 16

What is hepatitis cysticercos?

Answer 16

condition resembling acute fasciolosis pathology

Question 17

What is the DH and IH of T. taeniaeformis?

Answer 17

DH - cats

IH - mice and other rodents

Question 18

What is the DH and IH of T. multiceps?

Answer 18

DH - domestic dog and wild canids

IH - sheep, goats, cattle

Question 19

What is a coenurus cerbralis?

Answer 19

mature cyst is a large fluid filled cyst bearing clusters of scolices on its internal wall

Question 20

What taenia species do the IH get coenurus cerebralis?

Answer 20

T. multiceps

Question 21

What are the CS of coenurus cerebralis?

Answer 21

neurological signs of progressive space occupation, clinical syndrome- True Gid

Question 22

Where are cystecerci found in the IH of T. ovis?

Answer 22

skeletal and cardiac muscle

Question 23

Where are cysticerci found in T. hydatigenia?

Answer 23

Cysticercus tenuicolis - liver of sheep or big

associateed with C. novyi

Question 24

What are the DH and IH of T. saginata?

Answer 24

DH - humans

IH - cattle

Question 25

What are the DH and IH of T. solium?

Answer 25

DH - humans | IH - pigs

Question 26

What are the symptoms of T. solium in humans?

Answer 26

cerebral cysticercosis (arizona official died in car accident because of this)

Question 27

What are the DH and IH of Echinococcus granulosa?

Answer 27

DH - canids | IH - ruminants, man, pig

Question 28

Where are hydatid cysts located in E. granulosa?

Answer 28

liver and lungs

Question 29

What kind of hydatid cyst is associated with E. multilocularis?

Answer 29

alveolar hydatid cyst - has CT capsule and grows like malignant neoplasm

Question 30

What kind of hydatid cyst is associated with E. granulosa?

Answer 30

unilocular hydatid cysts - grow slowly, do not infiltrate

Question 31

What are the DH and IH of E. multicularis?

Answer 31

DH - canids and cat | IH - rodents (voles and lemmings)

Question 32

What is the most common tapeworm of dogs and cats?

Answer 32

Diplydium caninum

Question 33

What do the segments look like in D. caninum?

Answer 33

cucumber seed like and 2 sets of genital organs

Question 34

What are the intermediate hosts of Dipylidium caninum?

Answer 34

fleas and lice