It is a georeceptor organ of some living beings (plants or animals). It makes the body orient itself with respect to the center of gravity and with it provides the necessary balance in its growth or movement. It is a sensory organ, which is basically formed with tiny calcareous particles.
Scientific term derived from the Greek kystos, bladder and statos, adjective derived in turn from hístemi, place standing, straighten, push forward or upward, standing, in equilibrium, stable. Equilibrium cells of plants and some invertebrates that allows them to grow against gravity. They also use light and their proprioceptive sense as a reference.
