Research Article: Ear

Ear

The human ear is the anatomical structure responsible for hearing and balance. The ear consists of three parts, the outer, middle, and inner ears.

The outer ear collects sounds from the environment and funnels them through the auditory system. The outer ear is composed of three parts, the pinna (or auricle), the external auditory canal (or external auditory meatus), and the tympanic membrane (or eardrum).

The two flap-like structures on either side of the head commonly called ears are actually the pinnas of the outer ear. Pinnas are skin-covered cartilage, not bone, and are therefore flexible. The lowest portion of the pinna is called the lobe or lobule and is the most likely site for earrings. The pinnas of most humans cannot move, but these structures are very mobile in other mammals, such as cats and dogs.

The external auditory canal is a passageway in the temporal lobe of the...
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