Mechanism and absorption of minerals and water

MECHANISM AND ABSORPTION OF MINERAL AND WATER

  • Sodium is transported as sodium co-transport along with glucose and amino acids.
  • Sodium transport is also coupled transport with chloride ion
  • Sodium ion also shows diffusion across the electrochemical gradient.
  • Potassium is transported by passive diffusion across the concentration gradient
  • Bicarbonate ions are transported actively or rarely with sodium ion.
  • Magnesium ion is transported actively, but poorly absorbed.
  • Calcium ion is also transported actively by the calcium-binding protein produced under the influence of vitamin D3
  • Phosphorous  is  actively absored related to calcium absorption.
  • Copper ion is absorbed in small quantities.
  • Cobalt and manganese ions are readily absorbed.
  • Iron absorption is related to its level in mucosal cells and is mediated by apoprotein carriers.
  • Water is transported passively
Last modified: Saturday, 4 June 2011, 9:54 AM