The position of the head with respect to gravity is determined by the

A) shift in fluid in the semicircular canals.
B) movements of otoliths in response to gravity.
C) movements of perilymph in the vestibular chamber.
D) impulses transmitted from the macula of the semicircular canals.
E) stimulation of the cochlear portion of the nerve.

Otoliths

Otoliths are small, calcified particles in the inner ear that play a crucial role in sensing gravity and movement, aiding in balance and spatial orientation.

Semicircular Canals

Three fluid-filled tubes in the inner ear that help maintain balance by sensing rotations of the head.

Perilymph

Perilymph is the fluid that fills the space between the membranous labyrinth and the bony labyrinth of the inner ear, playing a key role in hearing and balance.