Summary: Fysiologie Spier/zenuw

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  • 1 Fysiologie Spier/Zenuw

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  • Intracellular Fluid (ICF)

    inside cells/intracellular compartment
  • Extracellular Fluid (ECF)

    outside/extracellular compartment
  • Blood Volume definition + type cells

    total volume of intravascular compartment
    cells: erythrocytes, leukocytes, platelets
  • Two ICF compartments

    1. Dense connective tissue (cartilage, bones)
    2. Bone matrix
  • Difference between Plasma Fluid & Interstitial due to..

    IF has no plasma proteins (can't cross capillary walls), affecting solute distribution due to volume occupation and charge
  • Effect Protein Charge

    plasma proteins = net negative charge -> retain cations in plasma
    [cation] in interstitium is <5% 
    [anion] in interstitium is >5%
  • Electrochemical Potential (deltaE)

    1. chemical potential
    2. voltage difference of charged solutes
  • Integral Membrane Proteins (Function)

    passive moment through intrinsic membrane proteins as most ions & hydrophilic solutes partition poorly in lipid bilayer
  • Membrane Protein Pore

    = always open
    e.g. aquaporin H20 channels, perforin released by lymphocytes
  • Membrane Protein Channel

    = alternately open/closed with barrier/gate
    e.g. virtually all ion channels
    opening/closing = "gating"

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