Question

The oval window has the surface area of the eardrum a)1/10 b)2/10 c)2/20 d)1/20 ​

Answer 1

Answer:

3.2 millimetres

Explanation:

the oval window is known to have a surface area of about 3.2 millimetres ^ 2, which is approximately 50 times smaller as compared to that of the eardrum.

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Answer 2

The surface area of the oval window is 1/20th surface area of the ear drum.

We are required to find the oval window surface area in terms of the eardrum.

The surface area of the oval window is 1/20th surface area of the ear drum.

• The surface area is lower for the oval window because it receives sound vibrations from the three bones of the middle ear and got amplified inside the inner ear
• If the surface area of the oval window is bigger than the eardrum then more vibrations pass into the oval window resulting in collapsing of the oval window.

So, The surface area of the oval window is 1/20th of the eardrum to avoid collapsing of the oval window and inner ear.

Therefore, Option(d) is the correct answer.

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