7. Differences between ECF & ICF ECF Anions : Cl - (108) HCO 3 - (24) Cations : Na + (142 mmol/L ) K + (4.2) Mg 2+ (0.8) Nutrients : O 2 , glucose, fatty acids, & amino acids. Wastes : CO 2 , Urea, uric acid, excess water, & ions. ICF Anions : Cl - (4) HCO 3 - (10) Phosphate ions Cations : Na + (14) K + (140) Mg 2+ (20) Nutrients : High concentrations of proteins.
8. COMPOSITION OF BODY FLUIDS CATIONS (mmol/l) Plasma Interstitial Intracellular Na 142 139 14 K 4.2 4.0 140 Ca 1.3 1.2 0 Mg 0.8 0.7 20 ANIONS (mmol/l) Cl 108 108 4.0 HCO3 24.0 28.3 10 Protein 1.2 0.2 4.0 HPO4 2.0 2.0 11
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12. Basic Definitions Tonicity Osmolality Physiological term (effective Os P relative to plasma) Solutes that do not cross the cell membrane only counts Chemical term All solutes contributes to Osmolality 2 x Na + + Glucose 285 mOsm/kg Na + x 2 + glucose + BUN 290 mOsm/kg
![[object Object],Body composition % of body weight Body composition 18% Protein, & related substances 15% Fat 7% Mineral 60% Water](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)