Multiple Choice
Which of the following correctly lists the organs of the digestive tract in order from proximal to distal?
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23. The Digestive System
Introduction to the Digestive System
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Which of the following organs is NOT part of the digestive system?
A
Esophagus
B
Trachea
C
Stomach
D
Small intestine
Verified step by step guidance1
Step 1: Understand the function of the digestive system, which is responsible for breaking down food, absorbing nutrients, and eliminating waste.
Step 2: Identify the role of each organ listed: the esophagus transports food from the mouth to the stomach; the stomach digests food using acids and enzymes; the small intestine absorbs nutrients from digested food.
Step 3: Recognize that the trachea is part of the respiratory system, not the digestive system, as it carries air to and from the lungs.
Step 4: Compare the functions and systems of each organ to determine which one does not contribute to digestion.
Step 5: Conclude that the trachea is NOT part of the digestive system because it serves a respiratory function.
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