Enkephalins and endorphins are subclasses of amines that are pain relievers.
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Q23: When a neuropeptide is secreted with one
Q24: In a myelinated neuron,the impulse can travel
Q25: A neurotransmitter can be excitatory or inhibitory,not
Q26: A neurotransmitter can be either excitatory or
Q27: Excitatory neurotransmitters are most likely to initiate
Q29: The speed of a nerve impulse depends
Q30: Myelinated fibers conduct impulses faster than unmyelinated
Q31: Spatial summation is the effect produced by
Q32: When epinephrine and norepinephrine are released into
Q33: The neurotransmitter acetylcholine always has an excitatory
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