Day 1 (Possible Post-Test II)

Question 1

The male roundworm is differentiated from the female roundworm by its:

Answer 1

Dorsally curved posterior

Question 2

Produces living larvae

Answer 2

Viviparous female nematode

Question 3

Where does the larva of Ascaris lumbricoides go after it hatches in the small intestine?

Answer 3

migrates through the blood, liver, lungs, pharynx, and then back to the small intestines

Question 4

If an Ascaris egg lack its bile-staned mammilated coat, we refer to the egg as

Answer 4

Decorticated

Question 5

The best way to demonstrate a pinworm infection is by which techniques?

Answer 5

Cellophane tape preparation

Question 6

The gravid female of E. vermicularis deposits her embryonated eggs.

Answer 6

on the perianal skin

Question 7

Eggs that average 60 um in length, are oval with on flattened slide, and contain a motile larva, are those of?

Answer 7

E. vermicularis

Question 8

Eggs that are bile-stained and have clear polar plugs belong to the

Answer 8

whipworm

Question 9

Which stage of trichuris trichiura is infective to humans?

Answer 9

embryonated eggs

Question 10

Which of the following is the first stage larva of intestinal nematodes?

Answer 10

rhabditiform larva

Question 11

Which organisms cause infections where the larva migrate into the lymphatics and blood, lung, alveoli, bronchiolus, pharynx, and then small intestine

Answer 11

N. americanus
A. duodenale
S. stercoralis

Question 12

What are the characteristics of the egg of hookworms?

Answer 12

An embryo in the two-to eight cells stage of cleavage,
oval, thin shell,
clear space between shell and embryo

Question 13

The helminth that induces a hypochromic microcytic anemia in its host is the

Answer 13

hookworm

Question 14

The rhabditiform larva of the hookworm has a

Answer 14

long buccal cavity equal to the width of the body

Question 15

What larval worms enters the host by penetration of the skin?

Answer 15

S. stercoralis
A. duodenale
N. americanus

Question 16

Ground itch occurs in infections of hookworms at the:

Answer 16

site of larva penetration of the skin

Question 17

Cutaneous larva migrans or creeping eruption is caused by:

Answer 17

Filariform larvae of dog hookworm

Question 18

A roundworm that inhabits the small intestine and usually is demonstrated as rhabditiform larvae in the fecal specimen is the

Answer 18

hookworm

Question 19

Muscle biopsy is a diagnostic technique employed to detect:

Answer 19

Trichinosis

Question 20

One of the differential characteristics of the microfilariae is the presence or absence of:

Answer 20

A sheath

Question 21

Adults of filarial worms live in:

Answer 21

Lymphatics and subcutaneous tissue

Question 22

One of the pathological findings in infestations of Wuchereria is:

Answer 22

Elephantiasis

Question 23

Known as the African eyeworm

Answer 23

Loa loa

Question 24

What is caused by the ingestion of snails by human?

Answer 24

Rat lungworm

Question 25

Definitive host of herring’s worm

Answer 25

dolphins and whales