(C) 60-65 # BODY COMPOSITION:> In an average young adult male, 18% of body wt is protein.7% is mineral, and 15%is fat.> The remaining 60% is water.> The intracellular component of body water accounts for about 40% of body wt. and the extracellular component for about 20%.> Approximately 25% of the extracellular component is in the vascular system(plasma =5% of body wt.) and 75% outside the blood vessels(interstitialfluid=15% of body wt.).> The total blood volume is about 8% of the body wt".