Which of the following would achieve the absorption of water across the epitheli

Question

Which of the following would achieve the absorption of water across the epithelial lining toward the blood vessels of the small intestine? Check All That Apply

Active transport of Na+ from the lumen to the basolateral side Active transport of Na+ from the lumen to the basolateral side

Facilitated diffusion of glucose to the bloodstream from the lumen Facilitated diffusion of glucose to the bloodstream from the lumen

Active transport of H+ from the basolateral side to the lumen Active transport of H+ from the basolateral side to the lumen

Tightening the tight junctions between epithelial cells Tightening the tight junctions between epithelial cells

Opening of aquaporins on the apical membrane

Explanation / Answer

Water is the essential fluid that maintain the various metabolisms. In our body 2 litres of water is ingested. But body glands and gastric secretion contribute for 7 litres of water in the small intestine.

Water absorption will be achieved through the Osmosis process.

Ative transport of Na+ attracts the Cl- ion. This makes the environment more concentrated, so that it facilitate the water absorption.

Aquaporins are the channels which facilitates water reabsorption from the gut.

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