Antrum

In Biology, "Antrum" is a general term for a cavity or chamber which may have specific meaning in reference to certain organs or sites in the body.

Examples include

• antrum cardiacum- a dilation that occurs in the esophagusnear the stomach (forestomach)
• mastoid antrum- Synonym: antrum mastoideum, tympanic antrum, Valsalva's antrum
• pyloric antrum
• antrum follicularum - the cavity in the epithelium that envelops the oocyte

This article is licensed under the GNU Free Documentation License.
It uses material from the http://en.wikipedia.org/wiki/Antrum Wikipedia article Antrum.