___ helps in equalizing the pressures on either sides of the ear drum.

Oval window

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Tympanic membrane

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Eustachian tube

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Pinna

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Solution

The correct option is C
Eustachian tube

Eustachian tube is a canal that connects the middle ear to the nasopharynx, which consists of the upper throat and the back of the nasal cavity. It controls the pressure within the middle ear, making it equal with the air pressure outside the body.

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Similar questions

	Column I		Column II
(a)	Cochlea	(i)	Ends at the oval window
(b)	Scala vestibuli	(ii)	Coiled part of inner ear
(c)	Organ of Corti	(iii)	Equalizes the pressure on either sides of the ear drum
(d)	Eustachian tube	(iv)	Located on the basilar membrane

___ helps in equalizing the pressures on either sides of the ear drum.

The ______ helps in equalising the pressures on either sides of the ear drum.

Consider the following statements.

i) Ears help our brain to sense from which directions the sounds are coming.

ii) Eustachian tubes equalize the air pressure on either side of the eardrum.

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