Health Dictionary
Reliable, easy-to-read patient information on common medical conditions — written in plain language, free of jargon, and grounded in current evidence. Browse the most frequent diagnoses, understand what they mean for everyday life, and learn which steps and questions help you have a focused conversation with your doctor.
Antrum
Introduction
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 esophagus near the stomach (forestomach)
- mastoid antrum – Synonym: antrum mastoideum, tympanic antrum, Valsalva’s antrum
- pyloric antrum – the initial portion of the pyloric part of the stomach
- antrum follicularum – the cavity in the epithelium that envelops the oocyte
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]