MEDICAL
RECTUM AND ANUS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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To increase the absorption surface
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To digest the last nutrients
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To form feces
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To comb the small intestine
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Detailed explanation-1: -Villi of the intestine move in swaying, contracting motions. These movements are believed to increase the flow of blood and lymph and to enhance absorption. The villi of the small intestine absorb about 2 gallons (7.5 litres) of fluid per day, and absorption seems to be indiscriminate.
Detailed explanation-2: -The structure of the small intestine is designed for absorption of nutrients. The inside of the small intestine is lined with villi that absorb nutrients from the liquid mixture called chyme produced in the stomach from the food we eat. Biology books usually have a detailed picture of the villi.
Detailed explanation-3: -Functions: Villi enhance the absorption surface area. The blood vessels of the villi transport ingested food to every cell in the body, where it is used to obtain energy, develop new tissues, and repair damaged ones.