What would happen if you did not have the stapedius and tensor tympani muscles? A. The ear canal would stay permanently closed. B. The ear canal would stay permanently open. C. The vestibular canals would be permanently misaligned, resulting in hearing and equilibrium problems. D. Loud sounds would cause the ossicles to move too much, potentially causing damage to the inner ear. E. The cochlea would not be secured in place and might move around.

Question

04-04-2020
Biology

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What would happen if you did not have the stapedius and tensor tympani muscles? A. The ear canal would stay permanently closed. B. The ear canal would stay permanently open. C. The vestibular canals would be permanently misaligned, resulting in hearing and equilibrium problems. D. Loud sounds would cause the ossicles to move too much, potentially causing damage to the inner ear. E. The cochlea would not be secured in place and might move around.

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jahanvi567 jahanvi567 · Answer 1 · 2020-04-06T09:13:20+02:00

(D) is the correct option

Explanation:

Both the stapedius and tensor tympani are striated muscles
The stapedius is about 6 mm in length, arises from the pyramidal process and the tendon attaches to the posterior neck of the stapes
The stapedius is a muscle with a high oxidative capacity
The tensor tympani is about 25 mm in length, the muscle is not as strong as the stapedius, and the tendon also contains more elastic tissue and fat
The tensor tympani courses through a bony canal in the wall of the anterior middle ear, and attaches to the neck of the manubrium
The tensor tympani and stapedius muscles are protective reflexes
They reduce the amount of sound that gets into the inner ear
They are somewhat similar to the blink reflex thus they can be triggered by loud noise, and when they go off, both ears can be involved
If stapedius and tensor tympani muscles is not present then loud sounds would cause the ossicles to move too much, potentially causing damage to the inner ear

Larus Larus · Answer 2 · 2021-12-21T15:43:50+01:00

In the absence of the stapedius and the tensor tympani muscles the loud sounds would make the ossicles to move too much, thus, causing damage to the inner ear.

• The stapedius and the tensor tympani are the protective reflexes.

• They are found in the middle ear and are associated with the ear ossicles.

• They minimize the amount of sound that gets into the inner ear, they are identical to the blink reflex.

• Both these muscles contract in response to incoming intense or loud sounds, which strike the eardrum, and thus minimizing the transmission of sound within the inner ear.

• Of the two muscles, the stapedius is considered to be more sensitive to sound in comparison to the tensor tympani.

Thus, the correct answer is option D.

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