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Question

The eustachian tube which connects middle ear to pharynx is found in

A
All the land vertebrates in general
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B
All vertebrates
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C
Amphibians only
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D
Mammals only
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Solution

The correct option is A All the land vertebrates in general
In humans and other land vertebrates, Eustachian tube is a tube, that links the nasopharynx to the cavity of the middle ear to allow the equalization of the pressure on both sides of the eardrum.

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