PHGY 209 Lecture Notes - Lecture 18: Transcellular Fluid, Body Water, Fluid Compartments
3 May 2016
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Total body water = 60% of body mass. Intracellular fluid = icf (2/3) 40% - aggregate of fluid bound by internal surface of cell membranes. The ect compartment is separated into 2 major compartments and 2 minor compartments. Red blood cells at the bottom ( heaviest) Buffy layer ( white blood cells and platelets) Hematocrit it is that percentage of blood volume that is occupied by red. Blood cells (height of erythrocyte column) / (height of whole blood column) Interstitial fluid it is the fluid that percolates between individual cells (the true. Lymph (1. 2% of ecf) drains into the large veins in the chest. Network of blind-ended (like a sock) terminal tubules. Which drain into the large veins in the chest. Transcellular fluid (1. 2% of ecf) - aggregate of small fluid volumes secreted by specific cells into a number of body cavities (lined by epithelial cells) and having specialized functions. (localized changes do not affect body fluid balance)
