AP PSYCHOLOGY

Detailed explanation-1: -The basilar membrane is a stiff structural element within the cochlea of the inner ear which separates two liquid-filled tubes that run along the coil of the cochlea, the scala media and the scala tympani.

Detailed explanation-2: -The organ of Corti (Figs. 14.11 and14.12) is a strip of hair cells and supporting cells about 35 mm long that rests on the basilar membrane.

Detailed explanation-3: -As the oval window moves, waves propagate through the perilymph fluid inside the scala tympani and then the scala vestibuli of the cochlea. When fluid moves through these structures, the basilar membrane (located between the scala media and scala tympani) shifts respectively to the tectorial membrane (Figure 1A).

Detailed explanation-4: -The tectorial membrane (TM) of the inner ear is a ribbon-like strip of extracellular matrix that spirals along the entire length of the cochlea.

Detailed explanation-5: -At this distal apex of the cochlea, the basilar membrane is at its widest (approximately 0.5mm) and flaccid.