Mastoid antrum

Mastoid antrum
Bone: Mastoid antrum
Gray913.png
Coronal section of right temporal bone. ("Tympanic antrum" labeled at upper left.)
Gray914.png
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.)
Latin antrum mastoideum
Gray's subject #230 1042

The mastoid antrum (tympanic antrum, antrum mastoideum, Valsalva's 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 aditus to mastoid antrum (entrance to the mastoid antrum).

Additional images

  • Left temporal bone showing surface markings for the tympanic antrum (red), transverse sinus (blue), and facial nerve (yellow).

External links

v · d · eBones of head and neck: the neurocranium of the skull (TA A02.1.01–07, GA 2.129–155)
Occipital
Other
Parietal
Frontal
Ethmoidal notch · Fossa for lacrimal gland · Trochlear fovea · Frontal sinus · Frontonasal duct
Temporal
Sphenoid
Surfaces
fossae (Pterygoid, Scaphoid) · pterygoid plates (Lateral, Medial) · Pterygoid canal · Hamulus
Other
Ethmoid
Plates
Surfaces
Ethmoid sinus · ethmoidal foramina (Posterior, Anterior)

M: BON/CAR

anat(c/f/k/f, u, t/p, l)/phys/devp/cell

noco/cong/tumr, sysi/epon, injr

proc, drug(M5)

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Look at other dictionaries:

  • mastoid antrum — n TYMPANIC ANTRUM * * * antrum mastoideum [TA] an air space in the mastoid portion of the temporal bone, communicating with the tympanic cavity and the mastoid cells; called also tympanic a. and mastoid cavity …   Medical dictionary

  • mastoid antrum — noun : tympanic antrum …   Useful english dictionary

  • Entrance to the mastoid antrum — Infobox Anatomy Name = PAGENAME Latin = aditus ad antrum mastoideum GraySubject = 230 GrayPage = 1042 Caption = The medial wall and part of the posterior and anterior walls of the right tympanic cavity, lateral view. Caption2 = Coronal section of …   Wikipedia

  • Mastoid cells — Coronal section of right temporal bone. (Mastoid cells labeled at bottom left.) Latin cellulae mastoideae Gray s …   Wikipedia

  • Mastoid wall of tympanic cavity — Coronal section of right temporal bone. The medi …   Wikipedia

  • Mastoid notch — Left temporal bone. Inferior surface. (Mastoid notch visible at bottom center.) Latin incisura mastoidea ossis temporalis Gray s …   Wikipedia

  • mastoid process — n the process of the temporal bone behind the ear that is well developed and of somewhat conical form in adults but inconspicuous in children * * * a nipple shaped process on the temporal bone that extends downward and forward behind the ear… …   Medical dictionary

  • Mastoid part of the temporal bone — Bone: Mastoid portion of the temporal bone Side view of head, showing surface relations of bones …   Wikipedia

  • Mastoid process — Bone: Mastoid process Side view of head, showing surface relations of bones. (Mastoid process labeled near center.) …   Wikipedia

  • Mastoid foramen — Bone: Mastoid foramen Left temporal bone. Inner surface. (Mastoid foramen labeled at bottom left.) …   Wikipedia

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