The purpose of the auditory bones is to _____________. Inhibit the perception of low decibel noises...

The purpose of the auditory bones is to _____________.

Inhibit the perception of low decibel noises

Reduce the pressure on the Round Window

Promote the transduction of olfactory chemicals visual signals

Reduce the pressure on the Tympanic Membrane

Concentrate pressure from the Tympanic Membrane

Expert Solution

The purpose of auditory bones is to :-

(e) Concentrate pressure from the Tympanic Membrane.

The auditory bones are ear ossicles - Malleus, Incus & stapes. The tympanic membrane is attached with Malleus which is connected with Incus and then stapes. And stapes is attached with the oval window.

The sound waves vibrate the tympanic membrane. This is transmitted to inner ear by the ear ossicles which concentrate the vibrations from the tympanic membrane to the cochlear oval window. These ossicles mechanically convert vibrations of eardrum (tympanic membrane) into amplified pressure waves in the fluid of cochlea (inner ear).

The other options are incorrect since :-

?They donot inhibit perception of low decibel noises.

?Since foot plate of stapes is connected to oval window so it doesn't reduce the pressure on round window.

?They donot promote transduction of olfactory chemicals as it is done by the olfactory nerve present in nose.

?Ear ossicles are for transmission of vibrations from tympanic membrane to inner ear not for reduction of pressure on tympanic membrane. When there is excessive noise then the pressure is reduced by Stapedius muscle entering into inner ear.

So all the options are incorrect except (e).

Thus the correct answer is (e) Concentrate pressure from tympanic membrane.

Sydney Mullin answered 1 year ago

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