antrum auris


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external auditory canal

the passage leading inward through the tympanic portion of the temporal bone, from the auricle to the tympanic membrane; it consists of fibrocartilaginous outer and bony inner portions lined with thin skin medially and thicker skin with ceruminous glands, hair follicles, and subcutaneous fat laterally.

ex·ter·nal a·cous·tic me·a·tus

[TA]
the passage leading inward through the tympanic portion of the temporal bone, from the auricle to the tympanic membrane; it consists of a bony (inner) portion and a fibrocartilaginous (outer) portion, the cartilaginous external acoustic meatus.

antrum auris

(1) External acoustic meatus; meatus acousticus externus [NA6]; external auditory canal.
(2) Middle ear; auris media [NA6].

ex·ter·nal a·cous·tic me·a·tus

(eks-tĕr'năl ă-kūs'tik mē-ā'tŭs) [TA]
The passage leading inward through the tympanic portion of the temporal bone, from the auricle to the tympanic membrane; it consists of a bony (inner) portion and a fibrocartilaginous (outer) portion, the cartilaginous external acoustic meatus.
Synonym(s): acoustic meatus (1) , antrum auris.