HISTOLOGY
DIGESTIVE SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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They move food from the stomach to the small intestine
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They absorb nutrients into the bloodstream
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They absorb water from chyme
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They move food from the small intestine to the large intestine
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Detailed explanation-1: -One of the main functions of villi is to absorb nutrients from the lumen in the small intestine. Since the walls of the villi are only one cell thick, the nutrients are able to quickly pass from the villi into the blood. They do this using a process called diffusion.
Detailed explanation-2: ->The main function of villi is to increase the surface area of the small intestine wall which helps in absorption of the digested food. This increased area for absorption is very useful as digested compounds like monosaccharide and amino acids pass into the semipermeable villi by diffusion.
Detailed explanation-3: -Villi That Line the Walls of the Small Intestine Absorb Nutrients. Villi that line the walls of the small intestine absorb nutrients into capillaries of the circulatory system and lacteals of the lymphatic system. Villi contain capillary beds, as well as lymphatic vessels called lacteals.
Detailed explanation-4: -Villi: The folds form numerous tiny projections which stick out into the open space inside your small intestine (or lumen), and are covered with cells that help absorb nutrients from the food that passes through.