Which of the following is a function of the GI system?

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Multiple Choice

Which of the following is a function of the GI system?

Explanation:
Absorbing nutrients from the foods we eat is a primary function of the GI system. After digestion, nutrients are absorbed mainly in the small intestine through its lining, then enter the bloodstream to be used by the body or sent to the liver for processing. The GI tract also handles water absorption and waste formation, but it isn’t responsible for excreting toxins from the blood—that task belongs to the liver and kidneys. It doesn’t regulate heart rate or constrict airways, which are functions of the cardiovascular/nervous and respiratory systems, respectively. So absorbing nutrients is the correct function.

Absorbing nutrients from the foods we eat is a primary function of the GI system. After digestion, nutrients are absorbed mainly in the small intestine through its lining, then enter the bloodstream to be used by the body or sent to the liver for processing. The GI tract also handles water absorption and waste formation, but it isn’t responsible for excreting toxins from the blood—that task belongs to the liver and kidneys. It doesn’t regulate heart rate or constrict airways, which are functions of the cardiovascular/nervous and respiratory systems, respectively. So absorbing nutrients is the correct function.

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