Neurones serving conscious muscle proprioception

safaTerkawi

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2022-08-10

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Neurones serving conscious muscle proprioception.

Conduct impulses at a similar rate to somatic motor neurones.
Have their cell bodies in the ipsilateral posterior horn of the spinal cord.
Use a different pathway from the primary neurones serving unconscious proprioception.
Synapse with secondary neurones whose axons project up the ipsilateral posterior (dorsa.l) columns of the spinal cord
Synapse with neurones which cross the midline of the body in the brainstem.

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safaTerkawi

2022-08-10

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A. True Both are fast fibres and reflexes involving them have a short reflex delay.

B. False They are in the posterior root ganglion.

C. True Unconscious proprioception impulses travel in the spino-cerebellar tracts.

D. False The primary neurone axons pass up the ipsilateral posterior columns before synapsing with secondary neurones at the top of the spinal cord.

E. True The secondary neurones cross in the medulla oblongata.

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