antrum

anatomy

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June 23, 2026

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The term "antrum" refers to an anatomical cavity found within a bone, such as the maxilla, or a hollow organ, like the stomach. The word originates from Late Latin, meaning "cave," and has been in use since 1684. The plural form is "antra," and the related adjective is "antral". The combining form "antr-" also signifies "antrum". For example, the pylorus is a part of the stomach that leads to the small intestine and functions to control the passage of food.123

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human digestive system
Anatomy
The antrum, the lowermost part of the stomach, is somewhat funnel-shaped, with its wide end joining the lower part of the body and its narrow end connecting with the pyloric canal, which empties into the duodenum (the upper division of the small intestine). The pyloric portion…
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The antrum, the lowermost part of the stomach, is somewhat funnel-shaped, with its wide end joining the lower part of the body and its narrow end connecting with the pyloric canal, which empties into the duodenum (the upper division of the small intestine). The pyloric portion…
Read More