Q:

A “post-ganglionic cholinergic fi bre” refers to a neuron that

waelhammad
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2022-10-19
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A “post-ganglionic cholinergic fi bre” refers to a neuron that 

  1. runs from CNS to a ganglion and releases noradrenaline
  2. synapses with an effector cell and whose neurotransmitter stimulates alpha and beta receptors.
  3. runs from a ganglion to an effector cell and releases norepinephrine
  4. synapses with an effector cell and releases acetylcholine (ACh)
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waelhammad
2022-10-19
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D: A “post-ganglionic cholinergic fi bre” runs from a ganglion to an effector organ (so choice A is wrong) and releases ACh (so choice C is wrong). Alpha and beta receptors are both adrenergic – that is bind with epinephrine & norepinephrine (=adrenalin & noradrenalin), so choice B is wrong. 

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