Microimmunology- Helminths

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| By Kiwuafor

Kiwuafor

Community Contributor

Quizzes Created: 1 | Total Attempts: 1,875

Questions: 10 | Attempts: 1,876 | Updated: Mar 21, 2023

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Questions and Answers

1.

The three main groups of helminth important to human are ________, _________ and ___________.
- A.
  
  Sarcodina, Cestoda and Sporozoa
- B.
  
  Cestoda, Digenea and Nematoda
- C.
  
  Protozoa, metazoa, and parasite worm
- D.
  
  Trematoda, platyhelminths, mastigophora
Correct Answer
B. Cestoda, Digenea and Nematoda

Explanation
Helminth is a term for all groups parasitic worms. The three main groups important to human are: The tapeworms (Cestoda), the flukes (Trematoda or Digenea) and the roundworms (Nematoda).

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2.

One of these statements is true regarding Cestode (tapeworms):
- A.
  
  Long thin unsegmented tube-like bodies with anterior mouths and longitudinal digestive tracts.
- B.
  
  Small flat leaf-like bodies.
- C.
  
  All Cestodes (tapeworms) have separate sexes with well-developed reproductive systems.
- D.
  
  long flat ribbon-like bodies with a single anterior holdfast organ (scolex)
Correct Answer
D. long flat ribbon-like bodies with a single anterior holdfast organ (scolex)

Explanation
Nematodes (roundworm) are long thin unsegmented tube-like bodies with anterior mouths and longitudinal digestive tracts.
Trematodes (flukes) are small flat leaf-like bodies.
all Cestodes (tapeworms) are hermaphroditic and are long flat ribbon-like bodies with a single anterior holdfast organ (scolex)

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3.

Nematodes (roundworms) have a fluid-filled internal body cavity called ___________ which acts as a hydrostatic skeleton providing rigidity.
- A.
  
  Taeniasis
- B.
  
  Acoelomate
- C.
  
  Pseudocoelum
- D.
  
  Meazoa
Correct Answer
C. Pseudocoelum

Explanation
Cestodes and Trematoda do not have a body cavity (acoelomate)

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4.

Helminths infection can occur by one of these process:
- A.
  
  Swallowing infective eggs or larva via the fecal-oral route.
- B.
  
  Swallowing infective larvae in the tissues of another host.
- C.
  
  Active penetration of the skin by larval stages.
- D.
  
  All of the above.
Correct Answer
D. All of the above.

Explanation
Blood sucking insects can also infect human with helminths.

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5.

Most often laboratory test perform for helminths infection is __________
- A.
  
  Wet prep
- B.
  
  Examination of the stool for ova and parasites (O&P)
- C.
  
  Eosinophil antibody by PCR
- D.
  
  Fecal occult
Correct Answer
B. Examination of the stool for ova and parasites (O&P)

Explanation
The most common laboratory test performed for helminths infection is the examination of the stool for ova and parasites (O&P). This test involves analyzing a stool sample under a microscope to look for the presence of eggs or larvae of helminths, which are parasitic worms. This test helps in diagnosing various types of helminths infections, such as roundworms, tapeworms, and hookworms. By identifying the presence of these parasites, appropriate treatment can be initiated to eliminate the infection.

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6.

In Helminth's life cycle, a definitive host is one in which the ____________ occurs or the _________ is present.
- A.
  
  Sexual cycle; adult
- B.
  
  Spore cycle; larva
- C.
  
  Asexual cycle; larva
- D.
  
  Binary fusion ; adult
Correct Answer
A. Sexual cycle; adult

Explanation
In Helminth's life cycle, a definitive host is one in which the sexual cycle occurs or the adult is present.

In Helminth's life cycle, an intermediate host is one in which the asexual cycle occurs or the larva is present.

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7.

One of the folllowing is true about Taeniasis?
- A.
  
  Most Taeniasis is symptomatic
- B.
  
  Taeniasis only occurs in human and cows
- C.
  
  Taeniasis specifically refers to chronic ring worm with self mechanism to invade host immunity.
- D.
  
  Taeniasis refers specifically to infection with the adult tapeworm in the gut of the definitive host.
Correct Answer
D. Taeniasis refers specifically to infection with the adult tapeworm in the gut of the definitive host.

Explanation
Taeniasis is asymptomatic, and only occurs in humans. Taeniasis refers specifically to infection with the adult tapeworm in the gut of the definitive host.

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8.

Human acquired schistosomiasis by ________
- A.
  
  Ingesting fish infected with larval stages
- B.
  
  Ingesting vegetation with larva stages
- C.
  
  Penetration of skin by larva stages from snails
- D.
  
  Ingesting crabs infected with larva stages
Correct Answer
C. Penetration of skin by larva stages from snails

Explanation
Schistosomiasis is caused by schistomes and are acquired by penetration of skin by larva stages from snails.
Three types of schistomes are:
Schistosoma haematobium (infects blood vessel of bladder)
Schistosoma japonicum (infects blood vessel of intestine)
Schistosoma mansoni. (infects blood vessel of intestine)

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9.

Trichinella does not require intermediate hosts.
- A.
  
  True
- B.
  
  False
Correct Answer
A. True

Explanation
It is capable of completing its life cycle in a single species of either its primary hosts, such as rodents, pigs, or wild games, or incidental hosts, such as humans.

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10.

Platyhelminths are the cestoda and the nematoda.
- A.
  
  True
- B.
  
  False
Correct Answer
B. False

Explanation
Platyhelminths are the Cestoda (the tapeworms) and Trematoda (the flukes). The Nematodes are the roundworms (Nematoda).

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Current Version
Mar 21, 2023

Quiz Edited by
ProProfs Editorial Team
Nov 02, 2012

Quiz Created by
Kiwuafor

Microimmunology- Helminths

The three main groups of helminth important to human are ____, _ and _______.

One of these statements is true regarding Cestode (tapeworms):

Nematodes (roundworms) have a fluid-filled internal body cavity called ___________ which acts as a hydrostatic skeleton providing rigidity.

Helminths infection can occur by one of these process:

Most often laboratory test perform for helminths infection is __________

In Helminth's life cycle, a definitive host is one in which the ____ occurs or the _ is present.

One of the folllowing is true about Taeniasis?

Human acquired schistosomiasis by ________

Trichinella does not require intermediate hosts.

Platyhelminths are the cestoda and the nematoda.

Microimmunology- Helminths

The three main groups of helminth important to human are ________, _________ and ___________.

One of these statements is true regarding Cestode (tapeworms):

Nematodes (roundworms) have a fluid-filled internal body cavity called ___________ which acts as a hydrostatic skeleton providing rigidity.

Helminths infection can occur by one of these process:

Most often laboratory test perform for helminths infection is __________

In Helminth's life cycle, a definitive host is one in which the ____________ occurs or the _________ is present.

One of the folllowing is true about Taeniasis?

Human acquired schistosomiasis by ________

Trichinella does not require intermediate hosts.

Platyhelminths are the cestoda and the nematoda.

The three main groups of helminth important to human are ____, _ and _______.

In Helminth's life cycle, a definitive host is one in which the ____ occurs or the _ is present.