Ear canal
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 pinna to the eardrum and is about 2.5 centimetres (1 in) in length and 0.7 centimetres (0.3 in) in diameter.
| Ear canal | |
|---|---|
Anatomy of the human ear. | |
| Details | |
| Precursor | groove (cleft) of the first branchial arch. |
| Artery | anterior part: superficial temporal artery posterior part: posterior auricular artery |
| Vein | superficial temporal veins, external jugular vein, pterygoid plexus |
| Nerve | auriculotemporal nerve, great auricular nerve, auricular branch of vagus nerve |
| Lymph | superficial cervical lymph nodes, deep cervical lymph nodes |
| Identifiers | |
| Latin | meatus acusticus externus |
| MeSH | D004424 |
| TA98 | A15.3.01.045 |
| TA2 | 6867 |
| FMA | 61734 |
| Anatomical terminology | |
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