Auditory ossicles

Definition

Auditory ossicles are the three small bones located in the middle ear that transmit sound vibrations from the eardrum to the inner ear. These bones are known as the malleus, incus, and stapes.

5 Must Know Facts For Your Next Test

1. The malleus is also known as the hammer.
2. The incus is also called the anvil.
3. The stapes is the smallest bone in the human body and is also referred to as the stirrup.
4. These bones amplify sound vibrations by approximately 20 times before they reach the inner ear.
5. They are essential for hearing as they bridge the gap between the eardrum and the oval window of the cochlea.

Review Questions

• What are the names of the three auditory ossicles?
• Which auditory ossicle is known as the smallest bone in the human body?
• How much do auditory ossicles amplify sound vibrations before reaching the inner ear?

Related terms

malleus: The first of three auditory ossicles, also known as the hammer.

incus: The second auditory ossicle, commonly referred to as the anvil.

stapes: The third and smallest auditory ossicle, often called the stirrup.