Inner ear

Definition

The inner ear is a complex structure within the temporal bone, crucial for hearing and balance. It contains the cochlea, vestibule, and semicircular canals, all filled with fluid and sensory cells.

5 Must Know Facts For Your Next Test

1. The cochlea in the inner ear converts sound waves into electrical signals that are interpreted by the brain.
2. The vestibular system in the inner ear helps maintain balance and spatial orientation.
3. Hair cells in the cochlea are essential for translating mechanical vibrations into neural signals.
4. The semicircular canals detect rotational movements of the head through fluid displacement.
5. Damage to the inner ear can result in hearing loss or balance disorders.

Review Questions

• What role does the cochlea play in hearing?
• How do the semicircular canals contribute to balance?
• What might be a consequence of damage to hair cells in the inner ear?

Related terms

Cochlea: A spiral-shaped organ in the inner ear responsible for converting sound vibrations into neural signals.

Vestibular System: A sensory system located in the inner ear that contributes to balance and spatial orientation.

Semicircular Canals: Three looped structures in the inner ear involved in detecting rotational movements of the head.