3) Parasites: Cestodes (tapeworms)

Question 1

Cestode is a

Answer 1

tapeworm

Question 2

Cestode physical characteristics:

Answer 2

• flatt body without body cavity

- strobila with head, neck, and proglottids

Question 3

Cestode head

Answer 3

scolex with 4 suckers; bothria

Question 4

Cestode type of sex

Answer 4

Hermaphraditic (each proglottid)

Question 5

Alimentary canal?

Answer 5

no

Question 6

Type of lifecycle?

Answer 6

Indirect

Question 7

more than 1 type of larval stage?

Answer 7

yes

Question 8

Strobila

Answer 8

body

Question 9

Proglottids

Answer 9

segments

Question 10

Two orders of Cestodes:

Answer 10

Cyclophyllidea Scolex and Pseudophyllidea bothria

Question 11

Cyclophyllidea

Answer 11

• 1 intermediate host
• organs associated with scolex and suckers
• egg has oncosphere

Question 12

Oncosphere/hexacanth embryo

Answer 12

egg with an egg sphere

Question 13

Psudophyllidea

Answer 13

• 2 intermediate host
• organs associated with scolex and bothria
• egg with oncosphere and cilia for motility

Question 14

Cyclophyllidea: where is the adult cestode?

Answer 14

in final host

Question 15

where are the segments (proglottids)

Answer 15

in feces

Question 16

where are eggs released from?

Answer 16

proglottids

Question 17

eggs are consumed by final host or intermediate

Answer 17

intermediate host

Question 18

Larvae develop in

Answer 18

intermediate host

Question 19

how does it get from intermediate host to final host?

Answer 19

intermediate host is consumed by final host

Question 20

are adult cestodes a problem?

Answer 20

not a problem unless it is a heavy infection in a young animal

Question 21

which stage of cestodes cause damage

Answer 21

larval stage

Question 22

lifecycle

Answer 22

dog poops, sheep ingest eggs, dog ingest sheep, sheep is intermediate

Question 23

which cyst is most dangerous

Answer 23

hydatid cyst because there are many inside of each other

Question 24

Cestode to know!!!

Answer 24

Taenia solium

Question 25

Taenia solium- final host?

Answer 25

Humans

Question 26

Taenia solium- how do humans become final host?

Answer 26

consume larva by eating undercooked pork

Question 27

taenia solium- adults can be found in the...

Answer 27

small intestines

Question 28

Taenia solium- is it normally pathogenic?

Answer 28

Not normally pathogenic

Question 29

Taenia solium- Intermediate host?

Answer 29

Pigs are intermediate host

Question 30

Taenia solium- how do pigs become intermediate host?

Answer 30

they consume human feces and larva forms on muscle/tongue

Question 31

Taenia solium- how do human become intermediate host?

Answer 31

Humans can consume human feces and develop cysticercus sickness then occurs in the brain