Answer:
The vestibular system
is the sensory apparatus of the inner ear that helps the body maintain its
postural equilibrium.
There are two sets
of organs in inner ear, or labyrinth?The semicircular canals which respond to
rotational movements; and the utricle and saccule within the vestibule, which respond
to changes in the position of the head with respect to gravity.
Each
semicircular canal contains hair cells. Rotation of the head causes a flow of
fluid, which in turn causes displacement of the top portion of hair cells
embedded in jelly-like capula. Utricle and saccule called otolithic organs
contain hair cells blanketed with ting stones called otoconia.
When the
head is tilted or body position is changed the displacement of stones causes
the hair cells to bend.
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