Which of the following best describes the chewing of food?
Absorption
Peristalsis
Regulation
Mechanical digestion
The Correct Answer is D
A. Absorption: Absorption refers to nutrients being taken into the bloodstream, mainly in the intestines.
B. Peristalsis: Peristalsis is the muscular movement of food through the digestive tract, not chewing.
C. Regulation: Regulation refers to control mechanisms in digestion but not to the act of chewing.
D. Mechanical digestion: Chewing breaks food into smaller pieces, which is mechanical digestion and prepares food for chemical digestion.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. Large intestine, excretion: The large intestine mainly absorbs water and forms feces; it does not have villi.
B. Pancreas, release of hormones: The pancreas releases insulin and glucagon but has no villi and is not directly involved in nutrient absorption.
C. Small intestine, absorption: Villi are fingerlike projections that line the small intestine to increase surface area for absorption of nutrients.
D. Gallbladder, production of bile: The liver produces bile; the gallbladder only stores it. Villi are not involved.
Correct Answer is A
Explanation
A. Decreases the reabsorption of water: Most diuretics act by preventing the reabsorption of sodium and water in the nephron, increasing urine output.
B. Decreases GFR (glomerular filtration rate): Diuretics do not usually decrease GFR; some may slightly increase or maintain it.
C. Activates the renin-angiotensin-aldosterone system: Diuretics often reduce blood volume, which might trigger RAAS as a compensatory mechanism, but activation of RAAS is not the drug’s direct action.
D. Causes the release of ADH: Diuretics counteract the action of ADH by promoting diuresis.
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