Exam 2 Review -- Vampirolepis nana & Hymenolepis diminuta

Question 1

Is Hymenolepis diminuta monozenous, diozenous, polyzenous, all or none of these?

Answer 1

monozenous

Question 2

What is the initial infected stage of the life cycle of Vampirolepis nana & Hymenolepis diminuta?

Answer 2

Embryonated eggs in feces

Question 3

Image A is what parasite? What body type is it?

Answer 3

Vampirolepis nana; mature proglottid

Question 4

Hymenolepis diminuta can cause infection directly and does not need an intermediate host. True or false?

Answer 4

False. It causes infection INDIRECTLY and NEEDS and intermediate host.

Question 5

What is A?

Answer 5

Cysticercoid of Hymenolepis nana

Question 6

What is one way to distinguish the eggs of Hymenolepis diminuta from Hymenolepis nana?

Answer 6

The “chicken foot” filaments that Hymenolepis diminuta has. (Filaments are larger)

Question 7

What is B?

Answer 7

One layer on embroy

Question 8

Which is the only organism that can cause infection directly without an intermediate host?

Answer 8

Vampirolepis nana

Question 9

The image represents the eggs of what parasite?

Answer 9

Hymenolepis diminuta

Question 10

Image B is what part of the parasite? Name the genus and species.

Answer 10

Rostellar hook; Vampirolepis nana

Question 11

Vampirolepis nana can cause infection directly and does not need an intermediate host. True or false?

Answer 11

True

Question 12

What are the symptoms of Hymenolepis nana?

Answer 12

diarrhea and symptoms of toxicity

Question 13

What is A?

Answer 13

Hooks

Question 14

What parasite is represented in image C? What is D? What is unique of D?

Answer 14

Scolex and neck of Hymenolepis nana; rostellum; it can go up or down

Question 15

Hymenolepis diminuta can cause infection indirectly and needs an intermediate host. True or false?

Answer 15

True

Question 16

The filaments of Hymenolepis diminuta (green) are larger than Hymenolepis nana. True or false?

Answer 16

True.

Question 17

What is C?

Answer 17

Bipolar filament

Question 18

These eggs are from what parasite?

Answer 18

Hymenolepis nana

Question 19

Vampirolepis nana can cause infection indirectly and needs an intermediate host. True or false?

Answer 19

False. It causes infection DIRECTLY and WITHOUT an intermediate host.

Question 20

What is the life cycle of Vampirolepis nana & Hymenolepis diminuta?

Answer 20

Eggs -> Ingested by insect -> Oncosphere is released and develop into cysticercoid (inside insect) -> Insect with cysticercoid is ingested by host -> Adult in host intestine -> Eggs

Question 21

What is E?

Answer 21

Mature proglottid of Hymenolepis nana.