Which of the following BEST describes absorption?A nutrient travels from the blood stream into the large intestine for excretion.A water molecule moves from the GI tract and then into the blood stream.A water molecule travels into the stomach from the food, but remains intact.A nutrient moves into the kidney to circulate and dispense into the body.
Question
Which of the following BEST describes absorption?A nutrient travels from the blood stream into the large intestine for excretion.A water molecule moves from the GI tract and then into the blood stream.A water molecule travels into the stomach from the food, but remains intact.A nutrient moves into the kidney to circulate and dispense into the body.
Solution
The option that best describes absorption is: "A water molecule moves from the GI tract and then into the blood stream."
Absorption in the context of physiology typically refers to the process by which the products of digestion - such as water, vitamins, minerals, carbohydrates, fats, and proteins - pass through the wall of the gastrointestinal tract and into the bloodstream. This allows the nutrients to be transported throughout the body for use in various bodily functions.
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