Vestibular system:

vestibular system and the cochlea.

sensory system found within the inner ear that is responsible for maintaining balance, coordination, and awareness of spatial orientation. The main components of the vestibular system are the semicircular canals and the otolith organs.

Watch this 2-Minute Neuroscience video to learn more about the vestibular system.

Read more - Know your brain: Vestibular system