There are different sphincter “muscles in the food canal. They are : 

1. Esophageal sphincter 

2. Cardiac sphincter 

3. Pyloric sphincter 

4. Anal sphincter and 

5. Ileocecal value or sphincter. 

1. Esophageal sphincter: 

1. This allows entry of bolus into the oesophagus,

2. It also reduces back flow from the oesophagus to pharynx. 

2. Cardiac sphincter: 

1. It is present where oesophagus meets the stomach, 

2. It’s location is almost directly in front of the heart, 

3. It allows food from oesophagus into the stomach. 

3. Pyloric sphincter: 

1. It is present at the opening called pylorus, located at the end of the stomach, 

2. Pyloric sphincter allows only small quantities of food into duodenum at a time. 

4) Anal sphincter:

1. It is located at the anus, the end of the digestive system, 

2. The release of waste is controlled partly, voluntarily by anal sphincter. 

5) Ileocecal value: 

1. It is situated at the junction of the small intestine (ileum) and the large intestine (colon), 

2. It’s function is to limit the colonic contents into the ileum.