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What is the function of the internal auditory canal?

The internal acoustic canal (IAC), also known as the internal auditory canal or meatus (IAM), is a bony canal within the petrous portion of the temporal bone that transmits nerves and vessels from within the posterior cranial fossa to the auditory and vestibular apparatus.

What does the auditory canal do for the ear?

The ear canal has two primary functions: helping the auditory process by funneling sound toward the eardrum and protecting the eardrum from injury. The inner two-thirds of the auditory canal are bony and free of hair and glands.

How does the auditory canal work in the ear?

It collects sound waves and channels them into the ear canal (external auditory meatus), where the sound is amplified. The sound waves then travel toward a flexible, oval membrane at the end of the ear canal called the eardrum, or tympanic membrane. Sound waves cause the eardrum to vibrate.

What is the auditory canal of the ear?

The auditory canal is a tube that connects the pinna, or fleshy outer visible part of the ear, and the tympanic membrane, or eardrum. Together, the pinna and the auditory canal make up the external ear and measure about 1 inch (26 mm) long.


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