Which organs digest food and remove waste?

• A. Stomach and intestines
• B. Lungs
• C. Spleen
• D. Skin

Answer: (A)

Digestion and waste elimination are functions of the digestive system, especially the stomach and intestines. The stomach churns food and mixes it with acids and enzymes to begin breaking it down. The small intestine continues that chemical digestion with enzymes from the pancreas and the intestinal lining, while absorbing most nutrients. The large intestine then absorbs water and forms stool, which is eliminated from the body.

Lungs handle gas exchange and remove carbon dioxide, not food. The spleen helps filter blood and support immune function, not digestion. The skin releases sweat, which can eliminate some wastes but does not digest food or form solid waste.

So the stomach and intestines are the organs that both digest food and remove waste from the body.