Metazoa

Question 1

how is Cryptosporidium hominis transmitted

Answer 1

from humans to humans (anthroponotic)

Question 2

what is a tegument

Answer 2

protective covering of flatworms

Question 3

how do these helminths get nutrients

a) nematodes
b) trematodes and cestodes

Answer 3

a) active ingestion of host tissue, fluids

b) passive absorption of nutrients from the surrounding fluids

Question 4

how do
a) oviparous
b) viviparous
reproduce

Answer 4

a) lay eggs

b) live young

Question 5

what helminths increase in number because of autoinfection (reinfection)

Answer 5

Strongyloides stercoralis,and Hymenolepis nana

Question 6

parasite surviving for decades

Answer 6

Clonorchis sinensis

Question 7

phylums in subkingdom metazoa

Answer 7

Platyhelminthes
Nemathelminthes
Acanthocephala

Question 8

classes in platyhelminthes

Answer 8

Trematoda

Cestoidea

Question 9

genera in trematoda

Answer 9

Schistosoma, Fasciola, Fasciolopsis, Clonorchis, and Paragonimus

Question 10

genera in Cestoidea

Answer 10

Diphyllobothrium, Taenia, Echinococcus, and Hymenolepis

Question 11

genera in Nemathelminthes

Answer 11

Trichuris, Trichinella, Capillaria, Strongyloides, Necator, Ancylostoma, Ascaris, Toxocara, Wuchereria, Brugia, and Onchocerca

Question 12

what are the biological names of

a) roundworms
b) flatworms
c) flukes (non-segmented)
d) cestodes (segmented)

Answer 12

a) Nematodes
b) Platyhelminthes
c) trematodes
d) tapeworms

Question 13

what are most fluke infections caused by in humans

Answer 13

Schistosoma species (schistosomiasis), liver flukes including Fasciola hepatica (fascioliasis) and Clonorchis sinensis (clonorchiasis), and lung flukes including certain Paragonimus species (paragonimiasis)

Question 14

what is the most common tapeworm

Answer 14

Hymenolepis nana, the dwarf tapeworm

Question 15

Taenia saginata

Taenia solium

Answer 15

beef tapeworm

pork tapeworm, also causes cysticercosis

Question 16

most common Nemathelminths

Answer 16

Ascaris (ascariasis)
Enterobius (Pinworm)
Hookworms ( Ancylostoma and Necator)
Trichuris (trichuriasis)
Strongyloides (strongyloidiasis)
Trichinella spiralis

Question 17

what is a Necator or Ancylostoma

Answer 17

Hookworm