restion 11 The standing osmotic gradient hypothesis uses the following to explain increased water absorption when the lateral intercellular spaces are long, narrow and express extra Na/K pumps O A. Active transport of water OB. Increased sodium absorption when water absorption is increased O C. Increased water absorption when a water concentration gradient is increased

Discuss 1 advantage and 1 disadvantage of the slow permeability rate.

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The mechanisms for producing the medullary osmotic gradient require active transport of sodium and chloride ions from the ascending limb of the loop of Henle. active transport of sodium and chloride ions from the ascending limb of the vasa recta. the ascending limb of the loop of Henle to be permeable to water. the vasa recta to be impermeable to water. both A and B