What is the heart and pyloric sphincter

Difference Between Cardiac and Pyloric Sphincters

The Main difference between the heart and pyloric sphincters that is The cardiac sphincter is located in the upper part of the stomach and closes off the upper end of the stomach, while the pyloric sphincter is present at the lower end of the stomach and closes off the lower part of the stomach.

The stomach is one of the organs of our digestive system. It is a muscle bag between the esophagus and the small intestine. Chemical digestion of food takes place in the stomach. There are four regions in the stomach. They are the heart region, the fundus of the stomach, the body of the stomach and the pylorus region. The stomach has two sphincters. A sphincter is a circular muscle that maintains the narrowing of a natural body passage. The two gastric sphincters are the cardiac sphincter and pyloric sphincter. The cardiac sphincter is at the top of the stomach while the pyloric sphincter is at the bottom of the stomach. Food stays in the stomach due to the contraction of these two sphincters.

1. Overview and main difference
2. What is cardiac sphincter?
3. What is pyloric sphincter?
4. Similarities Between Cardiac and Pyloric Sphincters
5. Side by side comparison - cardiac and pyloric sphincters in tabular form
6. Summary

What is cardiac sphincter?

The heart sphincter, also known as the lower esophagus sphincter, is a specialized valve. It is located at the top of the stomach, between the lower esophagus and the cardia of the stomach. It prevents stomach contents and acid from flowing back into the esophagus. The heart sphincter remains contracted to prevent the contents of the stomach from moving upwards. However, the heart muscle is weak and poorly developed compared to the pyloric sphincter.

What is pyloric sphincter?

The pyloric sphincter is the strong ring of smooth muscle that is located at the bottom of the stomach. It controls gastric emptying. This valve keeps the stomach closed for several hours to improve digestion. After that, it relaxes and opens up to allow the chyme to get into the duodenum, which is the first part of the small intestine. The pyloric sphincter receives sympathetic innervation from the celiac ganglion. The pyloric sphincter is a thick muscle ring and is best supplied with muscles compared to the cardiac sphincter.

What are the Similarities Between Cardiac and Pyloric Sphincters?

  • The heart and pyloric sphincters are two sphincters in our stomach.
  • They are special valves.
  • Food stays in the stomach due to the contraction of these two sphincter muscles.

What is the difference between cardiac and pyloric sphincters?

The cardiac sphincter is the valve at the top of the stomach, while the pyloric sphincter is the special valve at the bottom of the stomach. So this is the main difference between cardiac and pyloric sphincters. The cardiac sphincter prevents stomach acid and contents from flowing back into the esophagus, while the pyloric sphincter controls the release of chyme from the stomach into the duodenum.

In addition, the cardiac sphincter is weak and poorly developed, while the pyloric sphincter is a thick muscle ring that is well supplied with muscle.

The following infographic summarizes the difference between cardiac and pyloric sphincters.

Summary - Heart vs Pyloric Sphincter

Heart and pyloric sphincters are used in the normal course of digestion. You are gastric sphincter. The heart sphincter is located at the top of the stomach in the heart area. It connects the esophagus to the stomach. It prevents stomach acid and stomach contents from returning to the esophagus. The pyloric sphincter is located at the bottom of the stomach and connects to the duodenum. It controls gastric emptying. So this is the summary of the difference between cardiac and pyloric sphincters.