PHYSIOLOGY
NEUROTRANSMISSION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which is not true of myelinated neurons?
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they contain insulating cells called Schwann cells
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they contain gaps called nodes of Ranvier
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action potentials move through a process called continuous propagation
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action potentials move more rapidly down myelinated neurons that unmyelinated neurons
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Explanation:
Detailed explanation-1: -In neuroscience, saltatory conduction (from Latin saltus ‘leap, jump’) is the propagation of action potentials along myelinated axons from one node of Ranvier to the next node, increasing the conduction velocity of action potentials.
Detailed explanation-2: -Answer and Explanation: The correct answer is (b): continuous propagation; saltatory propagation. The completed sentence is “In unmyelinated axon fibers, action potential propagation travels by continuous propagation but in myelinated axon fibers, action potentials are propagated by saltatory conduction.
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