List the sphincters of the gastrointestinal tract.

The sphincters of the gastrointestinal tract are:

1. Upper Esophageal Sphincter: This is located at the top of the esophagus and controls the movement of food from the pharynx into the esophagus.

2. Lower Esophageal Sphincter (also known as the Gastroesophageal Sphincter): This is located at the bottom of the esophagus and controls the movement of food from the esophagus into the stomach.

3. Pyloric Sphincter: This is located at the lower end of the stomach and controls the movement of partially digested food from the stomach to the small intestine.

4. Sphincter of Oddi: This controls the flow of bile and pancreatic juice from the pancreas and gallbladder into the duodenum.

5. Ileocecal Sphincter: This is located where the small intestine meets the large intestine and controls the flow of material from the ileum into the large intestine.

6. Internal Anal Sphincter and External Anal Sphincter: These are located at the end of the digestive tract and control the expulsion of feces from the body.