Mastoid antrum
1654286
191016199
2008-02-12T23:29:33Z
Arcadian
104523
Entrance to the mastoid antrum
{{Infobox Bone |
Name = Mastoid antrum |
Latin = antrum mastoideum |
GraySubject = 230 |
GrayPage = 1042 |
Image = Gray913.png |
Caption = Coronal section of right [[temporal bone]]. ("Tympanic antrum" labeled at upper left.) |
Image2 = Gray914.png |
Caption2 = The medial wall and part of the posterior and anterior walls of the right [[tympanic cavity]], lateral view. ("Mastoid antrum" labeled at upper left, in dark circle.) |
System = |
Artery = [[stylomastoid artery]] |
MeshName = |
MeshNumber = |
DorlandsPre = a_50 |
DorlandsSuf = 12143566 |
}}
'''Mastoid antrum''' (or '''tympanic antrum''') is a cavity in the petrous portion of the [[temporal bone]], communicating posteriorly with the [[mastoid cells]] and anteriorly with the epitympanic recess of the [[middle ear]] via the aperture of the mastoid antrum.
==See also==
* [[Entrance to the mastoid antrum]]
==Additional images==
<gallery>
Image:Gray1209.png|Left temporal bone showing surface markings for the tympanic antrum (red), transverse sinus (blue), and facial nerve (yellow).
</gallery>
==External links==
* {{SUNYAnatomyFigs|30|02|01}} - "Illustration of the continuity of the nasopharynx with the middle ear cavity via the auditory tube."
* {{eMedicineDictionary|Mastoid+antrum}}
{{Skull}}
[[Category:head and neck]]