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List out the sphincter muscles of the fo...

List out the sphincter muscles of the food canal you have observed and give a brief description ?

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1) a) The sphincters that are present in the food canal are Esophased sphincter , Cardiac sphincter , Pyloric sphincter and Anal sphincter.
b) Esophageal sphincter allows entry of bolus into the esophagus . It also reduces back flow from the esophagus to pharynx.
2) Cardiac sphincter is present where the esophagus meets the stomach. From its location , almost directly in front of the heart.
3) Pyloric sphincter is present at the opening called the pylorus , located at the end of the stomach , at the connection between stomach and small intestine.
4) Anal sphincter is located at the anus , which marks the end of the digestive tract.
5) The release of waste from the rectum is controlled partly , voluntarily by anal sphincter located at the anus.
6) It's critical function is to limit the reflex of colonic contents into the ileum.
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Read the following passag: As the process of digestion in the stomach nears completion, the contraction of the stomach decrease. This prompts the muscles called as pyloric shincter opening of the stomach and the first part of the small intestine or duodenum to realax. This opens the pathway into duodenum releasing the partially digested food (chyme) in small quantities into the duodenum. Peristalsis involves the contractin of the muscle behind the food and the relaxation of he muscles in front of the food and the relaxation of the muscles in front of the food giving rise to na thrust that pushes the food forward through the digestive canal. A wave of contraction followed by realaxtion in muscles help in forward movement of food. Wirte answer for the following questions. What is the use of peristalsis movement ?

Read the following passag: As the process of digestion in the stomach nears completion, the contraction of the stomach decrease. This prompts the muscles called as pyloric shincter opening of the stomach and the first part of the small intestine or duodenum to realax. This opens the pathway into duodenum releasing the partially digested food (chyme) in small quantities into the duodenum. Peristalsis involves the contractin of the muscle behind the food and the relaxation of he muscles in front of the food and the relaxation of the muscles in front of the food giving rise to na thrust that pushes the food forward through the digestive canal. A wave of contraction followed by realaxtion in muscles help in forward movement of food. What is the use of duodenum ?

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