Anatomy Test 3 (9)

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Author:
hey_itsdarra
ID:
310923
Filename:
Anatomy Test 3 (9)
Updated:
2015-11-04 20:33:23
Tags:
UofM Anatomy
Folders:
UofM Anatomy
Description:
test 3
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  1. Pumps out Na fast is leaks in, removes more positive charges from the cell than they bring into the cell which means they contribute to the negatively of the resting membrane potential
    electrogenic pump
  2. are primary active transporters that hydrolyze ATP and use the energy released from ATP hydrolysis to transport ions across biological membranes leading to the translocation of net charge across the membrane.
    electrogenic pump
  3. what does a depolarizing degraded potential do?
    makes the membrane less polarized
  4. how the current travels down the axon ?
    from where they arise at the trigger zone of the axon to the axon terminals
  5. An inhibitory neurotransmitter that is very widely distributed in the neurons of the cortex. Contributes to motor control, vision, and many other cortical functions. It also regulates anxiety. (only found in CNS)
    Gamma- amino butyric acid (GABA)
  6. best studied neurotransmitter, is released by many PNS neurons and by some CNS neurons. It us excitatory at neuromuscular junctions but inhibitory at some other synapses.
    Acetylcholine
  7. is the smallest of the amino acids; an inhibitory neurotransmitter in the CNS, triggers chloride ion influx via ionotropic receptors, thereby creating an inhibitory post-synaptic potential.
    glycine
  8. how do you remove a neurotransmitter from a cell?
    diffusion, enzymatic degradation, uptake by cells
  9. what happens in depolarization of postsynaptic membrane?
    When the Ach crosses the synaptic membrane, it causes chemical to open

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