In the human digestive system, which sphincter muscle regulates the release of food from the stomach into the…

Question

In the human digestive system, which sphincter muscle regulates the release of food from the stomach into the small intestine?
(A) Anal sphincter
(B) Pyloric sphincter
(C) Cardiac sphincter
(D) Ileocaecal sphincter

Accepted Answer

## Model Answer **(B) Pyloric sphincter** The exit of food from the stomach is regulated by the **pyloric sphincter** muscle, which releases food in small amounts into the small intestine. Source: Life Processes, Section 5.2.4 (Nutrition in Human Beings) ## Explanation The passage explicitly states: *"The exit of food from the stomach is regulated by a sphincter muscle which releases it in small amounts into the small intestine."* This refers to the **pyloric sphincter**. Note the distinction: the **anal sphincter** regulates waste exit from the body, not food from the stomach. Examiners expect you to recall the correct name of the sphincter and its specific location/function.

Science (086) — AI-generated practice question