Ascaris lumbricoides Parasite Overview

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Questions and Answers

Where do mature Ascaris eggs usually mature?

  • In the liver
  • In the intestines
  • In the lungs
  • In the soil (correct)

How do Ascaris eggs become infectious?

  • After being coughed up
  • After being expelled in feces
  • After coming in contact with egg-contaminated soil (correct)
  • After entering the circulatory system

Where do larval Ascaris worms enter after being ingested?

  • Lungs
  • Appendix
  • Liver
  • Intestine (correct)

How do adult Ascaris worms enter the bile or pancreatic ducts?

<p>By burrowing through the intestine (C)</p> Signup and view all the answers

What can happen if a large mass of mature worms blocks the lumen of the small intestine?

<p>Completely block the lumen of the small intestine (B)</p> Signup and view all the answers

How do mature Ascaris worms usually exit the body to potentially be coughed up?

<p>Through coughing up from the lungs (B)</p> Signup and view all the answers

What is a potential consequence of intestinal blood loss due to worm ingestion?

<p>Iron deficiency anemia (D)</p> Signup and view all the answers

How is Strongyloidiasis infection similar to hookworm infection?

<p>Both enter the body through intact skin (B)</p> Signup and view all the answers

Why is Trichinella spiralis infection considered uncommon in the United States today?

<p>It is mainly related to ingestion of undercooked wild game (B)</p> Signup and view all the answers

What happens to Trichinella larvae after they are ingested from infected meat?

<p>They develop into mature worms in the muscles (B)</p> Signup and view all the answers

What causes the severe systemic symptoms during the phase of larval migration of Trichinella infection?

<p>Inflammatory reaction to the worms in tissues (D)</p> Signup and view all the answers

Which condition may result from Trichinella spiralis infection if left untreated?

<p>Heart problems (D)</p> Signup and view all the answers

How is an Ascaris infection identified?

<p>By detecting worm eggs in fecal material (A)</p> Signup and view all the answers

What is a common way children get infected with animal worms?

<p>Transfer of eggs through contaminated hands, toys, or objects (B)</p> Signup and view all the answers

Where do pinworms generally take up residence?

<p>Duodenum and ileocecal region (B)</p> Signup and view all the answers

Which statement about hookworm infection is true?

<p>Larvae enter the body through skin contact with contaminated soil (A)</p> Signup and view all the answers

What is a symptom commonly associated with pinworm infections?

<p>Intense anal and perianal itching (D)</p> Signup and view all the answers

How do whipworms (Trichuriasis) typically infect humans?

<p>Via ingestion of eggs in fecally contaminated soil (A)</p> Signup and view all the answers

What is a characteristic of adult hookworms in the small intestine?

<p>They have a specialized attachment organ called the buccal plate (C)</p> Signup and view all the answers

How are pinworm infections commonly spread among family members?

<p>From contaminated bedclothes or other objects (B)</p> Signup and view all the answers

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