||P.174 right column bottom paragraph: "The mammalian cochlea contains two classes of hair cells arranged in rows along the organ of Corti. Hair cells are neuroepithelial cells, with the apical pole specialized for mechanotransduction and the basal pole specialized for the release of neurotransmitter. Inner hair cells (IHCs), of which there are ∼3,500 in each human cochlea, are innervated by dendrites of the auditory nerve and are considered to be the primary sensory hair cells of the cochlea. Outer hair cells (OHCs) number ∼11,000 in each human cochlea and lie in 3 or 4 rows. They have a much less pronounced afferent innervation."