Choose the function irrelevant to oral cavity:
Correct answer: D. Absorption
- A. Grinding
- B. Digestion
- C. Lubrication
- D. Absorption
Explanation
The oral cavity is the first part of the digestive tract, and its main functions are to receive food, break it into smaller particles by mastication, and mix it with saliva. Absorption is the process of taking nutrients into the bloodstream, and it does not occur in the oral cavity.
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About Digestion
The human digestive system covers the organs from mouth to anus, the movement of food, and the mechanical and chemical breakdown of carbohydrates, proteins and fats. It also includes the roles of digestive enzymes, bile, absorption through intestinal villi, and the assimilation of nutrients by body cells.
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