Which is an accessory organ of the digestive system?

Which is an accessory organ of the digestive system?

• A. Esophagus
• B. Stomach
• C. Small intestine
• D. Teeth

Answer: (D)

Accessory organs assist digestion but aren’t part of the hollow tube the food passes through. Teeth fit this role because they physically break down food through chewing, which increases the surface area for enzymes to work on. They don’t move food along the digestive tract or produce digestive fluids themselves, unlike the stomach or intestines, which are parts of the main digestive pathway that churn, digest, and absorb nutrients. The esophagus is the muscular tube that transports swallowed food to the stomach, while the small intestine is where most nutrient absorption occurs. Because teeth help prepare food but aren’t part of that main passageway, they are considered an accessory organ.

Accessory organs assist digestion but aren’t part of the hollow tube the food passes through. Teeth fit this role because they physically break down food through chewing, which increases the surface area for enzymes to work on. They don’t move food along the digestive tract or produce digestive fluids themselves, unlike the stomach or intestines, which are parts of the main digestive pathway that churn, digest, and absorb nutrients. The esophagus is the muscular tube that transports swallowed food to the stomach, while the small intestine is where most nutrient absorption occurs. Because teeth help prepare food but aren’t part of that main passageway, they are considered an accessory organ.