Question

What factor contributes to dehydration?

options:

	Elevation of the ICF volume
	Re-absorption of fluid at the collecting tubules
	The osmotic concentration of electrolytes increases in the ECF.
	Activation of ADH

Answer 1

Ans:- c) The osmotic concentration of electrolytes increases in the ECF.

Concept:- When content of water inside the cell DECREAES it causes dehydration.

When electrolyte conc of ECF increases due to osmosis water move from icf to ECF leading to dehydration.

Because during dehydration water is directly lost from ECF.

OPTION a) is wrong because icf water Inc means hydration.

Optionb) also increases water absorption from urine and hence conserve water.

Option d) ADH increases water in body by increasing water absorption via aquaporine 2.