Q:

Impulses serving pain sensation in the left foot are relayed

safaTerkawi
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2022-08-09
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Impulses serving pain sensation in the left foot are relayed.

  1. Across synapses in the left posterior root ganglion.
  2. . By fibres in the left spinothalamic tract.
  3. By the same spinal cord tract which serves heat and cold sensation.
  4. To the thalamus on the right side.
  5. To the cerebral cortex before entering consciousness.
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safaTerkawi
2022-08-09
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A. False The ganglion contains sensory cell bodies but no synapses; primary pain fibres carrying these impulses synapse with secondary neurones in the left posterior horn.

B. False They cross to the right spinothalamic tract.

C. True Pain and temperature fibres travel together.

D. True Sensations other than smell are relayed in the thalamus.

E. False They enter consciousness at a subcortical level.

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