The Pyloric Sphincter is a ring of muscles that regulates the emptying of the stomach into the duodenum and prevents the contents of the small intestine from moving back into the stomach.
Pylorus
It is the opening from the stomach into the duodenum (small intestine).
A band of muscles at the opening of the stomach called the Cardiac (due to its proximity to the heart) Sphincter.
The pylorus is an opening at the lower end of the stomach that opens into the duodenum
The duodenum is the juncture between the stomach and the small intestine.
The Pylorus (the valve between the stomach and duodenum is the pyloric valve)
Pancreas
stomach and duodenum
The stomach and first part of the small intestine (duodenum) is connected by pylorus which has 2 parts. The on the stomach opening is called pyloric antrum and the opening in the duodenum is the pyloric canal type.
sphincter
The duodenum is the valve between the stomach and the small intestine.
The duodenum is small compared to the stomach.