18 Questions
What is the typical length of a microfilaria?
250-300 µm
What is the primary mode of transmission of lymphatic filariasis?
Infected mosquito bites
In which part of the body do microfilariae circulate?
Bloodstream
What is the periodicity of microfilariae in peripheral circulation?
Nocturnal
Which species of mosquito is the primary vector of lymphatic filariasis in India?
Culex fatigans
What is the definitive host of lymphatic filariasis?
Human
What is a common manifestation of filariasis?
All of the above
What is the characteristic of the fever in acute adenolymphangitis?
High and sudden in onset
What is the result of rupture of lymph varices?
Lymphorrhagia
What is the typical progression of lymphedema?
Starting around the ankle and spreading to the back of the foot and leg
What is the largest reported size of a hydrocele?
Over 100 kilograms
What is the delayed sequel to repeated lymphangitis, obstruction, and lymphedema?
Elephantiasis
What is the shape of the tail of the female Wuchereria Bancrofti worm?
Straight
In which region is Brugia malayi primarily distributed?
India and Far-East
Where do the adult worms of Lymphatic filariasis reside?
Lymphatic system
How do the female worms of Wuchereria Bancrofti produce microfilariae?
They release microfilariae directly into lymph
What is the characteristic of the microfilariae of Wuchereria Bancrofti in terms of their presence in the blood?
They are present in the blood only at night
What is the approximate lifespan of the adult Wuchereria Bancrofti worm?
10-15 years
This quiz covers the morphology and characteristics of microfilariae, including their size, movement, and circulation in the bloodstream. It also touches on their periodicity and relation to the night biting habit of vectors. Test your knowledge of these parasitic worms!
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