Which organ system includes the mouth, esophagus, stomach, small intestine, and large intestine?

Which organ system includes the mouth, esophagus, stomach, small intestine, and large intestine?

• A. Nervous
• B. Circulatory
• C. Digestive
• D. Muscular

Answer: (C)

Processing food and absorbing nutrients is what the digestive system does. The mouth starts mechanical and chemical digestion, the esophagus pushes food toward the stomach through peristalsis, the stomach mixes and acid-digests, the small intestine is where most digestion and nutrient absorption occur, and the large intestine absorbs water and forms waste. The nervous, circulatory, and muscular systems each interact with digestion, but they don’t define this single tract as a system that includes all those organs. So these organs belong to the digestive system.

Processing food and absorbing nutrients is what the digestive system does. The mouth starts mechanical and chemical digestion, the esophagus pushes food toward the stomach through peristalsis, the stomach mixes and acid-digests, the small intestine is where most digestion and nutrient absorption occur, and the large intestine absorbs water and forms waste. The nervous, circulatory, and muscular systems each interact with digestion, but they don’t define this single tract as a system that includes all those organs. So these organs belong to the digestive system.