Mastoid antrum
From Infogalactic: the planetary knowledge core
| Mastoid antrum | |
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Coronal section of right temporal bone. ("Tympanic antrum" labeled at upper left.)
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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.)
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| Details | |
| Latin | antrum mastoideum |
| Identifiers | |
| Dorlands /Elsevier |
a_50/12143566 |
| TA | Lua error in Module:Wikidata at line 744: attempt to index field 'wikibase' (a nil value). |
| TH | {{#property:P1694}} |
| TE | {{#property:P1693}} |
| FMA | {{#property:P1402}} |
| Anatomical terms of bone
[[[d:Lua error in Module:Wikidata at line 863: attempt to index field 'wikibase' (a nil value).|edit on Wikidata]]]
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The mastoid antrum (tympanic antrum, antrum mastoideum, Valsalva's antrum) is an air space 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 aditus to mastoid antrum (entrance to the mastoid antrum). These air spaces function as sound receptors, provide voice resonance, act as acoustic insulation and dissipation, provide protection from physical damage and reduce the mass of the cranium.[citation needed]
The mastoid air cell system is a major contributor to middle ear inflammatory diseases.[1]
Additional images
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Left temporal bone showing surface markings for the tympanic antrum (red), transverse sinus (blue), and facial nerve (yellow).
References
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
External links
- Anatomy figure: 30:02-01 at Human Anatomy Online, SUNY Downstate Medical Center - "Illustration of the continuity of the nasopharynx with the middle ear cavity via the auditory tube."
