Vestibular System Practice Test

The vestibular system provides motion information that the brain uses to coordinate gaze, balance, and bodily state. It drives eye movements through the vestibulo-ocular reflex, stabilizing vision when the head moves. It also communicates with the spinal cord via vestibulospinal pathways to influence muscle tone and reflexes that keep us upright and maintain posture. Additionally, vestibular input reaches autonomic centers in the brainstem, helping regulate heart rate, blood pressure, and visceral responses, which can also produce nausea or changes in arousal during motion. Hearing and visual perception rely on separate pathways (cochlear/auditory and cortical visual systems), so while vestibular input supports gaze stability, its main broad influences are eye movements, postural control, and autonomic regulation.