Multiple Choice
Which of the following is NOT part of the alimentary canal?
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23. The Digestive System
Introduction to the Digestive System
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Which of the following is considered an accessory organ of digestion?
A
Stomach
B
Small intestine
C
Liver
D
Esophagus
Verified step by step guidance1
Step 1: Understand the concept of accessory organs of digestion. Accessory organs are those that assist in digestion but are not part of the main digestive tract (alimentary canal). They produce enzymes, bile, or other substances that aid in digestion.
Step 2: Identify the main organs of the digestive tract. These include the stomach, small intestine, esophagus, and large intestine. These organs are directly involved in the movement and processing of food.
Step 3: Recognize the accessory organs of digestion. These include the liver, pancreas, and gallbladder. They contribute to digestion by producing substances like bile (from the liver) or enzymes (from the pancreas) but do not directly handle food.
Step 4: Compare the options provided in the question. The stomach, small intestine, and esophagus are part of the main digestive tract, while the liver is an accessory organ because it produces bile to aid in fat digestion.
Step 5: Conclude that the correct answer is the liver, as it is an accessory organ of digestion, unlike the other options listed.
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