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Biology LibreTexts

9B: Neural Signaling

  • Page ID
    4611
  • [ "article:topic", "authorname:jjakubowskih", "license:ccbyncsa" ]

    Skills to Develop

    • describe how a transmembrane ion gradient and nongated/gated membrane ion channels specific for given ions can give rise to a transmembrane electric potential across membranes
    • given ion concentrations and the electrical potential across a membrane, predict likely changes in the membrane potential and ion concentrations on the opening of specific channnels;
    • use the Goldman equation to predict transmembrane electrical potentials;
    • state difference between the communication across the neuromuscular junction and a synapse between two neurons;
    • state the difference between nongated and gated ion channels;
    • describe different ways to open/close gated ion channels
    • describe the immediate changes in the muscle cells when acetylcholine is released into the neuromuscular junction
    • describe the roles of stimulatory neurotransmitter receptors, voltage-gated Na+and K+ channels and the Na/K-ATPase  in the activation of a neuron;
    • explain the mechanism for selectivity of K+ over the smaller Na+ ion in the K+ channel;
    • briefly explain how membrane protein channels can be gated open by changes in transmembrane potential;