Identify the set of incorrect statement/s from the followings.
(I) In medullated nerve fibres, action potential jumps from one node to another node.
(II) After signal transmittance, post synaptic membrane is destroyed.
(III) Neurotransmitter is permanently destroyed after the transmission of nerve impulse has taken place.
Text Solution
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• In myelinated (medullated) fibers, the action potential jumps between nodes of Ranvier (saltatory conduction).
• The postsynaptic membrane is not destroyed after transmission of nerve impulse.
• Neurotransmitters are not permanently destroyed; they are enzymatically broken down and/or reuptaken and recycled (e.g., 
acetate + choline; choline is reused).
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