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The ear canal (external acoustic meatus, external auditory meatus, EAM) is a pathway running from the outer ear to the middle ear.The adult human ear canal extends from the auricle to the eardrum and is about 2.5 centimetres (1 in) in length and 0.7 centimetres (0.3 in) in diameter.
Auditory canal. Tympanic membrane (Ear drum) Eustachian tube. Tympanic cavity. Components of the middle ear; Usage: {{Middle ear map|label}} {{Middle ear map}}
The outer ear is the external portion of the ear and includes the fleshy visible auricle, the ear canal, and the outer layer of the eardrum (also called the tympanic membrane). [2] [3] The auricle consists of the curving outer rim called the helix, the inner curved rim called the antihelix, and opens into the ear canal.
external auditory canal ≅ external ear canal (Q258328) external auditory canal auricle ≅ auricle (Q379858) auricle. Captions. English.
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The sound waves enter the auditory canal, a deceptively simple tube. The ear canal amplifies sounds that are between 3 and 12 kHz. [1] The tympanic membrane, at the far end of the ear canal marks the beginning of the middle ear.