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Set Point
value around which the normal range fluctuates
Homeostasis
term used to describe the concept of constancy of the internal environment; proposed by Claude Bernard in the 19th century, cioned by Walter Cannon in 1932
60%
What percent of total body composition does water represent?
Interstitial Fluid, Plasma
two components of extracellular fluid
60:40:20
ratio of total body water : intracellular fluid : extracellular fluid compared to body weight
80:20
ratio of interstitial fluid : plasma compared to extracellular fluid weight
Plasma + RBC Volume
formula for blood volume (BV)
Hematocrit (%)
What is the following formula solving for? RBC Volume / BV * 100
35-50%
physiological range of hematocrit in adults
140:12
extracellular : intracellular concentration for sodium (ion)
4:150
extracellular : intracellular concentration for potassium (ion)
2.5:10^-4
extracellular : intracellular concentration for chloride (ion)
24:10
extracellular : intracellular concentration for bicarbonate (ion)
16:60 (16 in plasma, <1 in interstitial fluid)
extracellular : intracellular concentration for proteins- (ion)
300 mOsm/L
osmolarity for most body fluids
J = PA(C1-C2)
Fick’s Law of Diffusion for biological membranes