ANATOMY

Detailed explanation-1: -The intracellular fluid (ICF) and extracellular fluid (ECF) are separated by a semi-permeable cell membrane that is permeable to water but not to most solutes including electrolytes and proteins, which generally need transport systems to move across the membrane.

Detailed explanation-2: -WHAT ARE THE TWO GENERAL BARRIERS WHICH SEPARATE INTRACELLULAR FLUID, INTERSTITIAL FLUID AND BLOOD PLASMA? (1) THE PLASMA MEMBRANE OF INDIVIDUAL CELLS SEPARATES INTRACELLULAR FLUID FROM THE SURROUNDING INTERSTITIAL FLUID.

Detailed explanation-3: -The membrane separates the extracellular space, outside of the cell, from the cytosol inside the cell. The plasma membrane is the border between the interior and exterior of a cell. As such, it controls passage of various molecules-including sugars, amino acids, ions, and water-into and out of the cell.

Detailed explanation-4: -When a hyposmotic fluid is lost from the ECF, the volume of the ECF decreases, and the osmolarity increases. When the osmolarity in the ECF rises compared to ICF, water moves by osmosis from the ICF into the ECF.