antra


an·tra

(an'tră), Plural of antrum.

an·tra

(an'tră) Plural of antrum.

antrum

(an'trum) ('tra) plural.antra [L. antrum fr. Gr. antron, cave] Any nearly closed cavity or chamber, esp. in a bone. antral (-tral), adjective

duodenal antrum

The duodenal cap; a dilatation of the duodenum near the pylorus. It is seen during digestion.

gastric antrum

Distal non–acid-secreting segment of the stomach or pyloric gland region that produces the hormone gastrin.

antrum of Highmore

See: Highmore, Nathaniel

mastoid antrum

Old name for mastoid sinuses.

maxillary antrum

The maxillary sinus; a cavity in the maxillary bone communicating with the middle meatus of the nasal cavity.

pyloric antrum

A bulge in the pyloric portion of the stomach along the greater curvature on distention.

tympanic antrum

An air-filled sinus in the temporal bone connecting the mastoid air cells to the epitympanic recess.