A steel worker presented with noise induced hearing loss, which pa of inner ear is most likely affected?
NIHL cause damage to hair cells, staing in the basal turn of cochlea. Outer hair cells are affected before the inner hair cells. Outer hair cells are more in number and rows. More sensitive to noise induced hearing loss as well as to ototoxic drugs. Stereocilia of outer hair cells first to be affected by noise induced hearing loss.
Inner hair cell
Outer hair cell
Macula
Cupula
Diseases of Inner Ear and Vestibular Schwannoma