mastoid antrum


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Related to mastoid antrum: epitympanic recess, tegmen tympani, suprameatal triangle

antrum

 [an´trum] (pl. an´tra, antrums) (L.)
a cavity or chamber. adj., adj an´tral.
antrum of Highmore maxillary sinus.
mastoid antrum an air space in the mastoid portion of the temporal bone communicating with the middle ear and the mastoid cells.
antrum maxilla´re (maxillary antrum) maxillary sinus.
pyloric antrum (antrum pylo´ricum) the proximal, expanded portion of the pyloric part of the stomach.
tympanic antrum (antrum tympa´nicum) mastoid antrum.

mas·toid an·trum

[TA]
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 the mastoid antrum.

mastoid antrum

a cavity continuous with mastoid cells. It is separated from the middle cranial fossa above by the tegmen tympani.

mas·toid an·trum

(mas'toyd an'trŭm) [TA]
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.

Valsalva,

Antonio M., Italian anatomist, 1666-1723.
aneurysm of sinus of Valsalva - a congenital thin-walled tubular out-pouching usually in the right or noncoronary sinus with an entirely intracardiac course.
teniae of Valsalva - the three bands in which the longitudinal muscular fibers of the large intestine, except the rectum, are collected. Synonym(s): teniae coli
Valsalva antrum - a cavity in the petrous portion of the temporal bone. Synonym(s): mastoid antrum
Valsalva ligaments - the three ligaments that attach the auricle to the side of the head. Synonym(s): auricular ligaments
Valsalva maneuver - any forced expiratory effort against a closed airway.
Valsalva muscle - a band of vertical muscular fibers on the outer surface of the tragus of the ear. Synonym(s): tragicus muscle
Valsalva sinus - the space between the superior aspect of each cusp of the aortic valve and the dilated portion of the wall of the ascending aorta. Synonym(s): aortic sinus
Valsalva test - when the heart is monitored during the Valsalva maneuver, there is a characteristic complex sequence of cardiocirculatory events, departure from which indicates disease or malfunction.

mas·toid an·trum

(mas'toyd an'trŭm) [TA]
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 the mastoid antrum.
Synonym(s): antrum mastoideum.

antrum

pl. antra [L.] a cavity or chamber.

mastoid antrum
an air space in the human mastoid portion of the temporal bone communicating with the middle ear and the mastoid cells.
maxillary antrum, antrum maxillare
maxillary sinus, especially of humans.
pyloric antrum, antrum pyloricum
the lumen of the pyloric part of the stomach; the pump of the stomach, regulating the propulsion of food through the pylorus into the duodenum.
tympanic antrum, antrum tympanicum
mastoid antrum.
References in periodicals archive ?
The mastoid antrum was absent, with the mastoid process represented by a solid block of bone (figure).
In contrast, the left middle ear was well developed and aerated, with a normal ossicular chain, and the mastoid antrum also was well developed and aerated.
Pneumatization of the middle ear begins at week 29 and continues to week 34, when the process expands posteriorly to form the mastoid antrum.
The role of the mastoid antrum in the developing ear is still controversial.
In a histologic study of the temporal bones of newborns, conducted by Valtonen and Karmody, the mastoid antrum was noted to be present in all subjects, without significant differences for age, gender, or laterality (right versus left).
In our patient, no obvious pathway into the intracranial abscess existed, either from the mastoid antrum or from the middle ear.