Section 2: Fluids


Module 2

-> Internal environment bathed in fluids

Body Fluids Compartments

  1. Intracellular (ICF)
  2. Inside cells
  3. Extracellular (ECF)
  4. Interstitial fluid
  5. Plasma

Plasma - Pale yellow fluid, 92% H2O, 8% (proteins, ions, gas, nutrients & waste)

-> colloidal solution (suspended subs that doesn't settle)

Chemical Composition of Bodily Fluids

-> huge difference in ion concentrations between plasma & interstitial fluid vs intracellular fluid

-> small difference between plasma & interstitial fluid

-> composition maintained by selectively permeable membrane

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