function and innervation of tensor tympani

function

Tenses tympanic membrane, reducing amplitude of vibration which protects us form loud sounds

function and innervation of the stapedius

(1mm long smallest muscle)

Innervation = CN VII

Acoustic reflex - stiffens stapes, pulling away from oval windpw, reducing the transmission of sound

(protects against loud noise)

what travels through the basillar membrane and what is tonotopy