Vestibular system physiology

1. Physiology of the Vestibular
System
Educational Presentation for
Students

2. Introduction
• The vestibular system is responsible for
balance, spatial orientation, and coordinating
eye movements.

3. Anatomy
• Key structures: semicircular canals, otolith
organs (utricle & saccule), and vestibular
nerve.

4. Semicircular Canals
• Detect rotational movements through
endolymph fluid and hair cell activation.

5. Otolith Organs
• Detect linear acceleration and head position
relative to gravity using otoconia.

6. Vestibular Pathways
• Signals travel via the vestibular nerve to the
brainstem, cerebellum, and cortex for
processing.

7. Role in Balance
• Coordinates with vision and proprioception to
maintain posture and prevent falls.

8. Vestibulo-Ocular Reflex (VOR)
• Maintains stable vision during head
movements by adjusting eye position.

9. Disorders
• Damage to the vestibular system can cause
vertigo, dizziness, and imbalance.

10. Summary
• The vestibular system plays a crucial role in
maintaining equilibrium and spatial
orientation.