AP PSYCHOLOGY

Detailed explanation-1: -The pinna catches sound waves and channels them down the external auditory canal, where they hit the tympanic membrane and make it vibrate. Those vibrations cause the three ossicles to move.

Detailed explanation-2: -The vibrations from the eardrum set the ossicles into motion. The ossicles are actually tiny bones-the smallest in the human body.

Detailed explanation-3: -The membrane-like structure in the ear which receives the sound waves and starts vibrating is known as Eardrum. Eardrum passes these vibrations to the middle ear where it get amplified and finally reaches to brain.

Detailed explanation-4: -The vibrations in the middle ear move from the tympanic membrane, or eardrum, through the ossicles, which are the tiny bones inside the middle ear. In order from the eardrum, they are the malleus, incus, and stapes. The vibrations move through each bone, and then the stapes connects to the oval window.

Detailed explanation-5: -The outer ear collects the sounds which vibrate the eardrum in the middle ear. The inner ear gets these vibrations and sends them to the auditory nerve.