ANATOMY

Detailed explanation-1: -The pyloric sphincter at the bottom of the stomach governs the passage of food out of the stomach into the small intestine.

Detailed explanation-2: -The pyloric sphincter is a flap present in between the stomach and the entry of the small intestine, i.e. duodenum. This is placed in such a position that it restricts any kind of backflow of substances from the small intestine back to the stomach.

Detailed explanation-3: -The pyloric sphincter governs the passage of partly digested food from the stomach into the duodenum. This short first portion of the small intestine is followed by the jejunum and the ileum. The ileocecal valve of the ileum passes digested material into the large intestine.

Detailed explanation-4: -Antrum. The pyloric antrum is the initial portion of the pylorus. It is near the bottom of the stomach, proximal to the pyloric sphincter, which separates the stomach and the duodenum.

Detailed explanation-5: -The pyloric sphincter at the bottom of the stomach is a muscular valve that opens to allow food to pass from the stomach to the top of the small intestine.