Visceral flukes - Heterophyes heterophyes & Metagonimus yokagawai

Question 1

Heterophyes heterophyes & Metagonimus yokagawai are among

Answer 1

the smallest trematodes infecting humans

Question 2

Their tegument contains:

Answer 2

scale-like spines

Question 3

In M. yokagawai, the _____ and ____ are ________, and the complex is displaced to_________________

Answer 3

ventral sucker
gonotyl
fused together
the left side of the body

Question 4

Suckers are

Answer 4

weak

Question 5

Their eggs match _____ eggs but ______ are tiny

Answer 5

Clonorchis

opercular shoulders

Question 6

Adults live in ________ burrowed between _____

Answer 6

the small intestine

the villi

Question 7

Eggs contain:

Answer 7

fully developed miracidia when laid but hatches only when eaten by a snail

Question 8

2 intermediate host in H. heterophyes

Answer 8

mullet

Question 9

2 intermediate host in M. yokagawai

Answer 9

Salmon

Question 10

H. heterophyes occurs in

Answer 10

Asia, Egypt, and Hawaii

Question 11

M. yokagawai is common in

Answer 11

Far East, Spain, and the Balkans

Question 12

Other fish-eating mammals _______ serve as reservoirs hosts

Answer 12

cats, dogs, foxes

Question 13

heavy infections cause:

Answer 13

diarrhea and abdominal pain

Question 14

Eggs sometimes enter the _______ and carried to:

Answer 14

blood stream

other sites in the body: heart, brain, and spinal cord are common target organs.

Question 15

Diagnosis:

Answer 15

difficult when adult worms are not available (eggs alike).

Question 16

Treatment:

Answer 16

praziquantel