Intro to Hookworms/Strongyloides Flashcards
False about Ancylstoma
A.Buccal capsule armed with 4 large ventral very sharp cutting teeth
B.Some species are adapted to transmission through paratenic host- C.Development in the lungs of the final host is essential for all species
D.females bigger than males
C.Development in the lungs of the final host is essential for all species
Not essential dapat
False about copulatory bursa
A.sac like expansion of anterior part B.found in all male hookworms
C.used for copulation
D.where a pair of spicules are found
A.sac like expansion of anterior part
Posterior dapat
Which hookworm has a ventral pair of semilunar cutting plates at its buccal capsule? A. Necator americanus B. Ancylostoma duodenale C. Both of the above D. None of the above
A. Necator americanus
Which is false?
A. Ancylostoma duodenale is slightly smaller than Necator americanus
B. Rhabditiform larvae of Ancylostoma duodenale & Necator americanus are indistinguishable
C. Both are false
A. Ancylostoma duodenale is slightly smaller than Necator americanus
Bigger dapat
The buccal capsule of A.duodenale has ___
2 pairs of curved ventral teeth
Infective stage of hookworm to humans
Filariform larva
Main differences in filariform larvae of N.americanus & A.duodenale
N.americanus - conspicuous buccal spears and traverse striations @ tail
A.duodenale - inconspicuous naman
Where do hookworm adults reside in GI tract?
Mucosa of small intestine
The females deposit their eggs @ feces, then once the stool has been excreted into the soil, eggs hatch into __ after 1-2 days
Rhabditiform larva
Rhabditiform larva –> ______ (after 7-10 days)
Filariform larva
Hookworm filariform larva migrate into the lung before they reach the GI tract. True or false?
True
Once the hookworm reaches the small intestine, it immediately becomes sexually active. True or false?
False. After a month pa
Which is not a sign/symptom of hookworm penetration into skin? A. Ground itch B. Erythema C. Edema D. Muscular spasm
D. Muscular spasm
Which is not a sign/symptom of hookworm lung migration? A. Asthma B. Bronchitis C. Chest itchiness D. Dry cough
C. Chest itchiness
Which is not a sign/symptom of hookworm presence at small intestine? A.abdominal pain B.weight gain C.iron-def anemia D.steatorrhea
B.weight gain
Weight loss dapat.
Hypoalbuminemia is a manifestation of hookworm infection. What is it, exactly?
Low level of albumin due to combined loss of blood,lymph and protein
Diagnostic stage of hookworm life cycle
Parasite eggs in feces
Broad-spectrum antihelminthics like __&___ are preferred in areas where nematode infections are endemic.
Albendazole
Mebendazole
The ff envt factors can affect hookworm transmission except
A)damp, sandy soil with decaying vegetation
B)mode and extent of contact bet infected soil & human
C)infected soil in raw vegetables
D)none of the above
D)none of the above
True or false. Ancylostoma can be transmitted through oral route
Yes, thru oral route via feces at raw veggies
Cat hookworm is also known as__
Ancylostoma braziliense
Dog hookworm is also known as __
Ancylostoma caninum
Both cat and dog hookworm may utilize humans as accidental host. If this happens, “creeping eruption” may happen. What is another name for creeping eruption?
Cutanous larva migrans
True or false. Strongyloides stercoralis has free-living filariform & parasitic rhabditiform larvae. True or false?
False. Free-living rhabditiform, parasitic filariform
False about parasitic female (Strongyloides)
A. Smaller than free-living female
B. Short buccal cavity with four indistinct lips
C. Uteri length is one-third of whole body
D. With finely striated cuticle
A. Smaller than free-living female
Bigger dapat
False about parasitic female (Strongyloides)
A. Smaller than free-living
B. Muscular double-bulbed esophagus
C. Uteri length is two-thirds of whole body
D. None of the above
C. Uteri length is two-third of whole bodh
One-third lang.
