External ear

The external ear (also outer ear, auricular region or auricular region of head, latin: auris externa) is the outer part of each ear consisting of the auricle and the external acoustic meatus. At the deep end of the external acoustic meatus, separating the external ear from the middle ear lies the tympanic membrane (eardrum).

The structures of the external ear participate in conducting and focusing sound vibrations to the eardrum and further to the middle ear that carries them to the inner ear.

The auricle (or pinna) of the external ear concentrates and amplifies sound waves and channels them through the external acoustic opening into the external acoustic meatus, which conducts them to the tympanic membrane, also known as the eardrum.