Choose the function irrelevant to the oral cavity:
Correct answer: C. Absorption
- A. Grinding
- B. Lubrication
- C. Absorption
- D. Digestion
Explanation
Option A : In the oral cavity, the teeth, which are the chief structures of the oral cavity, tear and grind ingested food into pieces small enough for digestion. Option: C Absorption of food is not the function of the oral cavity. Options B and D : Lubrication and digestion are the main functions of the oral cavity accomplished by saliva. PTB XI Chap # 12 page # 246 The role of saliva in the oral cavity is manifold; an important function is to serve as a lubricant between hard (enamel) and soft (mucosal) tissues.
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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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