What is the name of the valve located at the beginning of the small intestine?

The valve located at the beginning of the small intestine is known as the pyloric valve. This specific valve is situated between the stomach and the duodenum, which is the first section of the small intestine. Its function is crucial as it regulates the passage of stomach contents into the small intestine, ensuring that food is adequately processed before entering the duodenum.

The duodenum is actually the first part of the small intestine rather than a valve itself. The ileocecal valve serves as the junction between the small intestine and the large intestine. The semilunar valve does not pertain to the digestive system but is instead associated with the cardiovascular system, specifically in the heart. Understanding the roles and locations of these structures is essential in the study of human anatomy, particularly in the context of the digestive system.