Question

Rhabditiform larva performs extra-intestinal migration through different organs in the body of man. Arrange them in the correct sequence.

(a) Liver

(b) Hepatic portal vein

(c) Heart

(d) Post caval vein

(e) Lungs

(f) Pulmonary arteries

(g) Alveoli

(h) Intestine

• A. d-a-b-e-f-c-h-g
• B. b-a-d-c-f-e-g-h
• C. e-f-a-c-b-d-g-h
• D. a-b-d-f-e-c-g-e-h

Answer 1

The correct option is B b-a-d-c-f-e-g-h

B. b-a-d-c-f-e-g-h

Reason: Rhabditiform larvae is characteristic feature of nematode. The rhabditiform larvae enters through the skin (hepatic portal vein through). Then they move into the liver. After that the larvae moves to post caval vein. The larvae can enter the heart, through this vein. Then the larvae then moves through the blood in the heart to the pulmonary arteries. This carries the larvae to the lungs. The larvae migrates to the alveolar sacs in the lungs. They are carried by the pharynx and are swallowed and moves to intestine.

So, the correct answer is option B.