The portion between the sulcus intermedius and the duodenopyloric constriction is termed the pyloric antrum.

Gastrin is a linear peptide hormone produced by G cells of the duodenum and in the pyloric antrum of the stomach.

Pyloric antrum (antrum, lesser cul-de-sac) is the initial portion of the pyloric part of the stomach.

The pyloric antrum is the location of several important endocrine cells including gastrin-producing G Cells (stimulate acid production) and the luminal-pH-sensitive population of somatostatin-producing D cells (responsible for shutting off acid secretion.

Inflammation of the pyloric antrum is more likely to lead to duodenal ulcers, while inflammation of the corpus (body of the stomach) is more likely to lead to gastric ulcers and gastric carcinoma.

One long branch of it runs from the lesser curvature or parallel to it in lesser omentum as far as the pyloric antrum to fan out into branches in a way like the digits of a crow's foot to supply the pyloric antrum and the anterior wall of pyloric canal.