Multiple Choice
Which of the following is not an accessory organ of digestion?
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23. The Digestive System
Introduction to the Digestive System
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Which two organs are primarily responsible for the mechanical breakdown of food in the digestive system?
A
Small intestine and pancreas
B
Esophagus and liver
C
Mouth and stomach
D
Large intestine and gallbladder
Verified step by step guidance1
Begin by understanding the process of mechanical digestion, which involves physically breaking down food into smaller pieces.
Identify the organs involved in mechanical digestion. The mouth is responsible for the initial mechanical breakdown through chewing, using teeth and tongue.
Consider the role of the stomach, which further mechanically breaks down food through muscular contractions known as peristalsis.
Recognize that the small intestine, pancreas, esophagus, liver, large intestine, and gallbladder primarily contribute to chemical digestion or other functions, not mechanical breakdown.
Conclude that the mouth and stomach are the two organs primarily responsible for the mechanical breakdown of food in the digestive system.
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