Q.

Eustachian tube connects

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a

middle ear with nasopharynx

b

middle ear with internal ear

c

middle ear with external ear

d

external ear with internal ear

answer is A.

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Detailed Solution

Eustachian tube connects middle ear with nasopharynx. During swallowing and yawning, it opens, allowing air to enter or leave the middle ear until the pressure in the middle ear equals the atmospheric pressure.

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