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Physiology Nervous System 99e3a638

Pontine transection leads to

A
Decerebrate rigidity
B
Decorticate rigidity
C
Increased muscle tone
D
Decreased muscle tone
High-Yield Explanation
Ans. (d) Decreased muscle tone(Ref: Ganong, 25th ed/p.242)Pontine transection leads to the loss of effects of Pontine reticulospinal tractNormal function of pontine reticulospinal tract - mediate excitatory effects. Excites gamma motor neurons to muscle spindles that maintains toneSo, there is decreased muscle tone

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