Regurgitation of food form stomach is prevented by

Options

A. Pyloric sphincter
B. Cardiac sphincter
C. Circular muscle
D. Muscularis mucosae

Answer

**Step-by-Step Solution:**

1. **Understanding Regurgitation**: Regurgitation refers to the process where undigested food moves back from the stomach to the esophagus and potentially to the mouth. This can happen voluntarily or involuntarily.

2. **Role of Sphincters**: The body has specialized muscles known as sphincters that regulate the flow of food and prevent backflow.

3. **Identifying the Relevant Sphincter**: In the context of the stomach, the sphincter that plays a crucial role in preventing regurgitation is called the cardiac sphincter (also known as the lower esophageal sphincter).

4. **Function of the Cardiac Sphincter**: The cardiac sphincter is located at the junction of the esophagus and the stomach. It remains closed to prevent the backflow of food from the stomach into the esophagus.

5. **Special Consideration for Infants**: It is noted that in infants, regurgitation is more common because their cardiac sphincter is less developed, making it less effective in preventing the backflow of food.

6. **Conclusion**: Therefore, the cardiac sphincter is the structure that prevents the regurgitation of food from the stomach to the esophagus and mouth.

**Final Answer**: The cardiac sphincter prevents the regurgitation of food from the stomach.

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