Which of the following is not an accessory organ of digestion?

• A. Pancreas
• B. Liver
• C. Gallbladder
• D. Stomach

Answer: (D)

Verified step by step guidance

1. Understand the role of accessory organs in the digestive system. Accessory organs aid in digestion but are not part of the digestive tract itself.
2. Identify the accessory organs listed: Pancreas, Liver, and Gallbladder. These organs produce or store substances that help in digestion.
3. Recognize that the pancreas produces digestive enzymes and bicarbonate, the liver produces bile, and the gallbladder stores bile.
4. Consider the stomach's role. The stomach is part of the digestive tract where food is mixed and broken down, not an accessory organ.
5. Conclude that the stomach is not an accessory organ of digestion, as it is directly involved in the digestive process itself.