Otoliths

Definition

Otoliths are small calcium carbonate crystals located in the vestibular system of the inner ear. They play a critical role in detecting gravity and linear acceleration.

5 Must Know Facts For Your Next Test

1. Otoliths are essential for balance and spatial orientation.
2. They are found in two structures of the vestibular system: the utricle and saccule.
3. Displacement of otoliths can cause vertigo, a condition often treated with otic drugs.
4. Otoliths help convert mechanical stimuli from head movements into neural signals.
5. Dysfunction or damage to otolith organs can result in balance disorders.

Review Questions

• What role do otoliths play in the vestibular system?
• Which two structures within the vestibular system contain otoliths?
• How can displaced otoliths affect a person's health?

Related terms

Vestibular System: A complex structure in the inner ear responsible for maintaining balance and spatial orientation.

Utricle: A part of the vestibular system containing otoliths that detects horizontal acceleration.

Saccule: A component of the vestibular system containing otoliths that detects vertical acceleration.