Q:

Muscle tone is reduced by

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 Muscle tone is reduced by.


  1. Curare-like drugs.
  2. Lower motor neurone lesions.
  3. Upper motor neurone lesions.
  4. Cerebellar lesions.
  5. Gamma efferent impulses to muscle spindles.

All Answers

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A. True These paralyse muscle by blocking transmission at neuromuscular junctions.

B. True Lower motor neurones also paralyse skeletal muscle.

C. False Loss of supraspinal influences results in spasticity of the affected muscles.

D. True The cerebellum helps to maintain normal muscle tone.

E. False These increase spindle sensitivity to stretch and hence muscle tone.

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