Description: The utricle is a small sac-like structure located in the inner ear, specifically in the vestibule of the vestibular system. Along with the saccule, the utricle plays a crucial role in balance and the perception of head position in space. This structure contains sensory cells that respond to gravity and linear movements, allowing the brain to interpret the orientation and movement of the body. The utricle is lined with a gelatinous membrane that contains otoliths, small calcium carbonate particles, which move in response to changes in head position. This action stimulates hair cells, sending signals to the central nervous system to help maintain balance and stability. The function of the utricle is essential for everyday activities such as walking, running, and performing coordinated movements, as it provides vital information about the body’s position in relation to gravity and the surrounding environment.
