In the spinal cord

safaTerkawi

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2022-08-10

In the spinal cord.

Pain impulse traffic may be modulated in the posterior horn.
Autonomic motor neurones arise in the lateral horn.
Gamma-aminobutyric acid may act as an excitatory neurotransmitter.
Reflex centres are normally inhibited by descending impulses from supra-spinal centres.
post-synaptic excitation may be mediated by amino acid derivatives acting as neuro-transmitters.

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safaTerkawi

2022-08-10

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A. True In the substantia gelatinosa; endorphins may inhibit pain impulse transmission.

B. True These are the preganglionic autonomic motor neurones.

C. False It is an inhibitory transmitter thought to be responsible for IPSPs at post-synaptic membranes.

D. False Loss of supraspinal facilitation is responsible for the areflexia in spinal shock.

E. True Glutamate and aspartate are thought to be responsible for much of excitatory transmission in the CNS.

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