it14spr201.20Bc8t18-26.txt

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JJLT
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261307
Filename:
it14spr201.20Bc8t18-26.txt
Updated:
2014-02-10 17:56:24
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profmwinston
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Description:
Neurophysiology Sections 18-26
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  1. ´╗┐Short-lasting event in which the electrical membrane potential of a cell rapidly rises and falls.
    Action Potential
  2. Chemical element symbol for Calcium.
    Ca+
  3. Transport of a substance out of a cell in a membrane bounded vesicle.
    Exocytosis
  4. Chemical that an axon end secretes into a synapse.
    Neurotransmitter
  5. A narrow extracellular space between the cells of a synapse.
    Synaptic Cleft
  6. Tiny enlargement at the end of an axon that secretes a neurotransmitter.
    Synaptic Knob
  7. In a neuron, this stores various neurotransmitters that are released at the synapse.
    Synaptic Vesicles
  8. A specialized cell or group of nerve endings that response to sensory stimuli.
    Receptors
  9. Receptors that form an ion channel pore; transmembrane molecules that can open or close a channel.
    Ionotropic Receptors
  10. A type of membrane receptor of eukaryotic cells that acts through a secondary messenger.
    Metabotopic Receptors
  11. Depolarizing the membrane possibly triggering an action potential.
    Excitatory Post Synaptic Potential
  12. Hyperpolarizing the cell membrane.
    Inhibitory Post Synaptic Potential
  13. Slower onset and longer lasting response of post-synaptic cells to certain neurotransmitters and neuromodulators.
    Slow Synaptic Potentials
  14. Graded potential in postsynaptic cells that begins quickly and lasts only a few milliseconds.
    Fast Synaptic Potentials
  15. If activity in the modulatory neuron decreases neurotransmitter release.
    Presynaptic Inhibition
  16. Modulation of the presynaptic neuron that enhances neurotransmitter release.
    Presynaptic Facilitation
  17. Summation of two stimuli that follow one another in time.
    Temporal Summation
  18. Summation of graded potentials from several sources.
    Spatial Summation
  19. Reabsorption of a neurotransmitter by a neurotransmitter transporter of a presynaptic neuron after it has performed its function of transmitting a neural impulse.
    Reuptake
  20. Material is gradually lost.
    Leakage
  21. Process of breaking down.
    Degradation
  22. Break down of Acetocholine.
    Acetocholinesterase
  23. MAO; the enzyme that breaks down norepinephrine.
    Monoamine Oxidase
  24. Group of interconnected neurons which have a specific function.
    Neuronal Pool
  25. Process of lowering the threshold for propagation of the action potential of a neuron.
    Facilitation
  26. A number of presynaptic neurons provide input to a smaller amount of postsynaptic neurons.
    Convergence
  27. A few presynaptic neurons branch to affect a larger number of postsynaptic neurons.
    Divergence

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