antrum

(noun)

A bodily cavity, especially one having bony walls, especially in the sinuses.

Related Terms

Examples of antrum in the following topics:

  • Gastrointestinal Reflex Pathways

    • When this reflex is stimulated, the release of gastrin from G-cells in the antrum of the stomach is shut off.

  • Microscopic Anatomy of the Stomach

    • The pyloric antrum has thicker skin cells in its walls and performs more forceful contractions than the fundus.

  • Digestive Properties of the Stomach

    • Gastrin is released by G-cells in the stomach, via the base cells of the pyloric, cardiac, and fundic glands, in response to distension of the antrum, and digestive products (especially large quantities of incompletely digested proteins).