Deck 50: Tissue Nematodes

Question 1

MATCHING
Match the organism with the mode of transmission.
a.Dracunculus medinensis
b.Parastrongylus cantonensis
c.Trichinella spp.
d.Parastrongylus costaricensis
Copepods

Answer 1

A

Question 2

MATCHING
Match the organism with the mode of transmission.
a.Dracunculus medinensis
b.Parastrongylus cantonensis
c.Trichinella spp.
d.Parastrongylus costaricensis
Crabs

Answer 2

B

Question 3

MATCHING
Match the organism with the mode of transmission.
a.Dracunculus medinensis
b.Parastrongylus cantonensis
c.Trichinella spp.
d.Parastrongylus costaricensis
Snails

Answer 3

D

Question 4

A child is believed to have a Toxocara cati infection in his eye,which he acquired after playing with a stray cat for several weeks.A serum titer was performed,which revealed a titer of 1:8.This laboratory value can be interpreted as:

A)normal.
B)insignificant.
C)diagnostic.
D)negative.

Question 5

MATCHING
Match the organism with the mode of transmission.
a.Dracunculus medinensis
b.Parastrongylus cantonensis
c.Trichinella spp.
d.Parastrongylus costaricensis
Swine

Question 6

Systemic involvement is rare in infection caused by Ancylostoma braziliense or Ancylostoma caninum;however,pneumonitis may occur.The antihelminthic therapy used to treat this infection is:

A)ivermectin or thiabendazole.
B)metronidazole or thiabendazole.
C)mebendazole or ivermectin.
D)albendazole or diethylcarbamazine.

Question 7

A definitive diagnosis can be made in a Trichinella infection on the basis of which of the following findings?

A)Presence of adult worms in the feces
B)Identification of encysted larvae through muscle biopsy
C)Presence of cutaneous larvae migrans in the skin
D)Identification of unembryonated eggs in the feces

Question 8

Humans acquire infection with Trichinella tissue nematode by ingesting undercooked meat that contains the infective encysted larvae.In which tissue do these larvae encyst?

A)Brain
B)Meninges
C)Myocardium
D)Striated muscle