Vestibular hair cells are specialized sensory cells located in the inner ear, specifically within the vestibular system. They play a crucial role in maintaining balance and spatial orientation by detecting head movements and changes in position. These cells are equipped with tiny hair-like structures called stereocilia, which bend in response to fluid movement within the inner ear. When the head moves, the fluid shifts, causing the stereocilia to bend. This bending generates electrical signals that are sent to the brain, informing it about the body's position and motion. Proper functioning of vestibular hair cells is essential for coordination and balance.