The vestibular system is a sensory system located in the inner ear that helps maintain balance and spatial orientation. It consists of structures called the semicircular canals and otolith organs, which detect head movements and changes in position. This information is then sent to the brain to help coordinate balance and eye movements. When the head moves, the fluid in the semicircular canals shifts, triggering hair cells that send signals to the brain. The otolith organs respond to gravity and linear acceleration, providing additional information about the body's position. Together, these components ensure stability and coordination during movement.