AP W3

    Cards (11)

    • What is a potential difference (V)?
      An uneven distribution of charges
    • Resting potential of a neuron is -70mV
    • Extracellular fluid contains high concentrations of what?
      Sodium (Na+) and Chloride (Cl-)
    • Intracellular fluid contains high concentrations of what?
      Potassium (K+) and negatively charged proteins (Pr-)
    • Depolarisation is any shift from rmp to a less negative potential
    • Hyperpolarisation is a shift from rmp to a more negative potential
    • Repolarisation - process of restoring rmp
    • An action potential begins near the axon hillock
    • Continuous propagation can happen only in an unmyelinated axon
    • Action potential in a myelinated axon is called?
      Saltatory propagation (its faster)
    • The neurotransmitter acetylcholine (ACh) is released at
      cholinergic synapses
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