5 Questions
Where is Strongyloides stercoralis more frequently found?
Rural areas and lower socioeconomic groups
How do filariform larvae initiate the parasitic cycle in humans?
Penetrate the human host skin
What are the two types of life cycles of Strongyloides stercoralis?
Free-living cycle and parasitic cycle
Where do the adult female worms of Strongyloides stercoralis reside in the human body?
Small intestine
What do the rhabditiform larvae of Strongyloides stercoralis develop into in the free-living cycle?
Infective filariform larvae or free-living adult males and females
Study Notes
Strongyloides stercoralis Distribution
- Strongyloides stercoralis is more frequently found in tropical and subtropical regions.
Initiation of Parasitic Cycle
- Filariform larvae penetrate the human skin, usually through contact with contaminated soil or feces, to initiate the parasitic cycle in humans.
Life Cycles
- Strongyloides stercoralis has two types of life cycles: free-living cycle and parasitic cycle.
- The free-living cycle occurs in the soil, while the parasitic cycle occurs in the human host.
Adult Female Worms
- Adult female worms of Strongyloides stercoralis reside in the intestinal mucosa of the human body, specifically in the duodenum and jejunum.
Rhabditiform Larvae Development
- In the free-living cycle, rhabditiform larvae of Strongyloides stercoralis develop into infective filariform larvae.
Test your knowledge on Strongyloides stercoralis, a nematode that causes strongyloidiasis in humans. This quiz covers the causal agent, geographic distribution, and other key facts about the parasitic infection.
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