The physiology instructor is discussing the GI system with the pre-nursing class. What should the instructor tell the students is the function of the GI tract?
A) The breakdown of food particles into the atomic form for digestion
B) The elimination of digested unabsorbed vegetable matter and other waste products
C) The absorption into the bloodstream of small nutrient molecules produced by digestion
D) The reabsorption of medication not needed by the body
Ans: C
Feedback: Primary functions of the GI tract are the following: the breakdown of food particles into the molecular form for digestion; the absorption into the bloodstream of small nutrient molecules produced by digestion; the elimination of undigested unabsorbed foodstuffs and other waste products. The GI system does not reabsorb medications not needed by the body.
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