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Chapter 10: Problem 2

The purpose of the eardrum is to protect the sensitive nerves underneath it. It serves no purpose in actual hearing. True or false?

Short Answer

Expert verified
False. The eardrum, while offering protection to the inner parts of the ear, also plays a crucial role in the process of hearing by transmitting and amplifying sound vibrations.

Step by step solution

01

Understanding the human auditory system

The human auditory system plays a crucial role in hearing. One of the key components of this system is the eardrum, also known as the tympanic membrane. The eardrum is a thin, cone-shaped membrane that separates the external ear from the middle ear.
02

The function of the eardrum in hearing

Sound waves that enter the ear canal hit the eardrum, which causes it to vibrate. These vibrations are then transmitted to the three small bones, or ossicles, in the middle ear: the malleus, incus, and stapes. The ossicles amplify these vibrations and transmit them to the cochlea in the inner ear, where they are converted into electrical signals that are sent to the brain via the auditory nerve.
03

Correcting the mistaken assumption

Thus, contrary to the statement in the exercise, the eardrum is indeed essential to hearing. While it does also play a role in protecting the middle and inner ear, its primary function involves the transmission and amplification of sound vibrations.

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Most popular questions from this chapter

The tubelike passage leading from the outer ear to the eardrum is known as the _____ _____.

The _____ theory of hearing states that the entire basilar membrane responds to a sound, vibrating more or less, depending ca the nature of the sound.

The three fluid-filled tubes in the inner ear that are responsible for our sense of balance are known as the _____ _____.
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