The vestibular system occupies the vestibular labyrinth, which is a portion of the membranous labyrinth.

This vestibular labyrinth sits within the bony labyrinth of the inner ear, specifically in the region adjacent to the cochlea.

The functions of the vestibular system are to provide a sense of balance and equilibrium and to aid in control of eye movement and body posture.

Vestibular dysfunction is manifested by uncontrolled eye movements and feelings of nausea and vertigo.