Home
Class 11
BIOLOGY
The opening in the nasopharynax tht perm...

The opening in the nasopharynax tht permits air pressure on both sides of tympanic membrane of the ear to be kept equal is

A

Oval window

B

Tube of cochlea

C

Auditory nerve

D

Eustachian tube

Text Solution

Verified by Experts

The correct Answer is:
D
Eustachian tube allows air to enter or leave the middle ear until the pressure in the middle ear equals the atmospheric pressure. When the pressures are balanced the tympanic membrane vibrates freely as sound waves strike it.
Promotional Banner

Similar Questions

Explore conceptually related problems

Structure that helps to maintain equal pressure on both sides of ear drum is

Proper air pressure in the middle and internal ear is maintained by

Assertion:The inner ear contains three ossicles (malleus, incus and stapes) which are attached to one another in a chain-like fashion. Reason:The stapes is attached to the tympanic membrane and the malleus is attached to the oval window of the cochlea.

Assertion:The Eustachian tube helps in equalising the pressures on either sides of the ear drum. Reason:The Eustachian tube connects the middle ear cavity with the pharynx.

Assertion. Tympanic membrane separates the external ear from the middle ear. Reason. Tympanic membrane transmits vibrations (pressures waves in air) to the internal ear via ear ossicles of middle ear.

Read the following statements and find out the incorrect statements. a. Anatomically, the ear can be divided into three major sections called the outer ear, the middle ear and the inner ear. b. The outer ear consists of the pinna and external auditory meatus (canal). c. The tympanic membrane (ear drum ) is composed of connective tissue covered with mucus membrane outside and with skin inside. d. The ear ossicles reduces the efficiency of transmission of sound waves to the inner ear. e. The pinna collects the vibrations in the air which produce sound.