<P> An otolith ( Greek : ὠτο - , ōto - ear + λῐ́θος , líthos , a stone ) , also called statoconium or otoconium or statolith , is a calcium carbonate structure in the saccule or utricle of the inner ear , specifically in the vestibular system of vertebrates . The saccule and utricle , in turn , together make the otolith organs . These organs are what allows an organism , including humans , to perceive linear acceleration , both horizontally and vertically ( gravity ) . They have been identified in both extinct and extant vertebrates . </P>
<P> An otolith ( Greek : ὠτο - , ōto - ear + λῐ́θος , líthos , a stone ) , also called statoconium or otoconium or statolith , is a calcium carbonate structure in the saccule or utricle of the inner ear , specifically in the vestibular system of vertebrates . The saccule and utricle , in turn , together make the otolith organs . These organs are what allows an organism , including humans , to perceive linear acceleration , both horizontally and vertically ( gravity ) . They have been identified in both extinct and extant vertebrates . </P>
in the otolith organs the otoliths are calcium carbonate particles that -- -- -- --
in the otolith organs the otoliths are calcium carbonate particles that -- -- -- --
to perceive linear acceleration
to perceive linear acceleration