When the head moves, fluids known as ________ and endolymph in the semicircular canals and vestibule move, activating equilibrium receptors and hearing receptors.

Endolymph

A fluid within the inner ear that plays a critical role in the body's balance and hearing mechanisms.

Vestibule

A small entrance hall or antechamber leading to the main interior of a building or structure.

Equilibrium Receptors

Sensory receptors located mainly in the inner ear that help maintain balance by detecting changes in head position.