part of hair cell hair-cell stereocilium 2016-04-15T09:54:25Z BTO:0005823 BrendaTissueOBO In the inner ear, stereocilia are the mechanosensing organelles of hair cells, which respond to fluid motion in numerous types of animals for various functions, including hearing and balance. They are about 10 to 50 micrometers in length and share some similar features of microvilli. Stereocilia exist in the auditory and vestibular systems. Marion, contact@brenda-enzymes.org