Ascaris lumbricoides Parasite Overview

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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?

By burrowing through the intestine Signup and view all the answers

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

Completely block the lumen of the small intestine Signup and view all the answers

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

Through coughing up from the lungs Signup and view all the answers

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

Iron deficiency anemia Signup and view all the answers

How is Strongyloidiasis infection similar to hookworm infection?

Both enter the body through intact skin Signup and view all the answers

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

It is mainly related to ingestion of undercooked wild game Signup and view all the answers

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

They develop into mature worms in the muscles Signup and view all the answers

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

Inflammatory reaction to the worms in tissues Signup and view all the answers

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

Heart problems Signup and view all the answers

How is an Ascaris infection identified?

By detecting worm eggs in fecal material Signup and view all the answers

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

Transfer of eggs through contaminated hands, toys, or objects Signup and view all the answers

Where do pinworms generally take up residence?

Duodenum and ileocecal region Signup and view all the answers

Which statement about hookworm infection is true?

Larvae enter the body through skin contact with contaminated soil Signup and view all the answers

What is a symptom commonly associated with pinworm infections?

Intense anal and perianal itching Signup and view all the answers

How do whipworms (Trichuriasis) typically infect humans?

Via ingestion of eggs in fecally contaminated soil Signup and view all the answers

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

They have a specialized attachment organ called the buccal plate Signup and view all the answers

How are pinworm infections commonly spread among family members?

From contaminated bedclothes or other objects Signup and view all the answers