Intestinal Nematodes Flashcards
Unholy threel
Hookworm spp., Ascaris lumbricoides, Trichuris trichuria
The infective stage of roundworms
Embryonated egg
Enzyme produced by A. lumbricoides
Pepsin inhibitor PI-3
Somatic muscle of ascaris
Polymarian
What are the soil-transmitted helminths
- S. stercoralis
- Hookworm spp.
3 A. lumbricoides - T. trichuria
What are the non-soil transmitted helminths?
- E. vermicularis
- C. philippinensis
- C. hepatica (Calodium hepaticum)
- C. Aerophila (Eucoleus aerophilus)
Identify: D shaped egg, with triple albuminous coating, inner lipoidal membrane, and tadpole-like embryo
E. vermicularis
Younger stage of E. vermicularis
E. gregorri
The gold standard test for pinworm
Graham’s scotch adhesive tape wab (perianal cellulose tape swab)
Perianal itching (pruritus ani) exhibited by this parasite
E. vermicularis
Other names for Enterobius
Oxyuris, pinworm, society worm, threadworm
Secretory cells of schistosomes in C. philippinensis
Stichocytes
The infective stage of C. philippinensis
Filariform larvae
Pore-forming protein of Trichuris
TT47 / TT50
Transmission of Strongyloides
Skin penetration
Type of diarrhea in Strongyloides
Cochin-China diarrhea
Characteristic unembryonated egg seen in trichuriasis
Barrel/ Football/ Lemon/Japanese lantern with bipolar plugs
Mode of transmission in Ancylostoma duodenale
- Skin penetration
- Ingestion of L3
- Transmammary
- Transplacental
Characteristic of the fertilized egg in hookworm spp.
Morula ball appearance
Ascaris egg w/o mamillated albuminous coat
Decorticated
Layers of fertilized Ascaris egg
- Mamillated albuminous coat
- Glycogen layer (vitelline and chitin)
- Lipoidal layer
- Germ cell
Hookworm: Semilunar cutting plate
N. americanus
True hookworm
N. americanus
Hookworm: two ventral teeth
A. duodenale and A. braziliense
