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QUESTION
Q373) Bicarbonate ions are released in exchange of chloride ions in ileum from ...[Odisha 2002 ]

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Microvilli are microscopic and can only be seen with a very powerful microscope, also called as Brush border cell The mechanisms responsible for the solute transport across the Gastrointestinal tract (GI tract) are secondary to several transport proteins located at the brush border membranes of the small and large intestine.
The net fluid movement across the gastrointestinal epithelium is primarily the result of active transport of Na+, Cl−, and HCO3−, among others.
Answer : (c)