vestibulaarsüsteem

The vestibulaarsüsteem, commonly known as the vestibular system, is a sensory system in the inner ear that plays a crucial role in balance, spatial orientation, and the coordination of eye movements. It is comprised of two main parts: the otolithic organs and the semicircular canals. The otolithic organs, the utricle and saccule, detect linear acceleration and gravity. They contain small calcium carbonate crystals called otoliths that move in response to changes in head position, stimulating sensory hair cells. The semicircular canals, on the other hand, are three fluid-filled loops oriented at approximately right angles to each other. They detect angular acceleration, or rotational movements of the head, by sensing the movement of fluid within the canals.

Information from the vestibular system is transmitted to the brainstem and cerebellum via the vestibular nerve. This sensory input is integrated with information from other sensory systems, such as vision and proprioception, to provide the brain with a comprehensive understanding of the body's position and movement in space. This integrated information is essential for maintaining upright posture, coordinating movements, and preventing motion sickness. Dysfunction of the vestibular system can lead to a variety of symptoms, including dizziness, vertigo, imbalance, and nausea. These symptoms can significantly impact an individual's quality of life and ability to perform daily activities.