Which one of the following life cycle stages of Wuchereria bancrofti is infective to man?
Microfilaria
1st stage larva
2nd stage larva
3rd stage larva
D.
3rd stage larva
Wuchereria or filarial worm is a diagenetic parasite. Its primary host is human and Culex mosquito is the intermediate host. When a mosquito bites an infected person, microfilarial or first stage juvenile are picked up. Inside the mosquito muscles, microfilariae transform into infectious parasite or third stage juvenile which are deposited near the site of mosquito. When this mosquito bites a healthy person, third stage juvenile or infectious parasite penetrates through the punctured skin and reach the human lymphatic system.
Which stage of malarial parasite is infective to man?
Gametocyte
Merozoite
Cryptomerozoite
Sporozoite
A female Anopheles mosquito can be recognised by
proboscis and palpi are long and more or less of equal length
proboscis long and palpi short
proboscis short and palpi long
Both proboscis and palpi are short
Which of the following is related to humoral immunity?
T- lymphocyte
B- lymphocyte
I- lymphocyte
P- lymphocyte
Which one of the following life cycle stages of malarial parasite is responsible for relapse of malarial symptoms?
Merozoite
Sporozoite
Hypnozoite
Gametocyte
Which is the correct sequence of arrangement of types of WBC in decreasing order in terms of number per mm3 of human blood
Eosinophils > Basophils > Neutrophils
Basophils > Eosinophils > Neutrophils
Neutrophils > Eosinophils > Basophils
Eosinophils > Neutrophils > Basophils
The anterior V-spot in microfilaria of Wuchereria represents
nerve ring
cervical papilla
excretory system
reproductive system
