NERVOUS
NEUROGLIA
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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True
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False
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Either A or B
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None of the above
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Detailed explanation-1: -By acting as an electrical insulator, myelin greatly speeds up action potential conduction (Figure 3.14). For example, whereas unmyelinated axon conduction velocities range from about 0.5 to 10 m/s, myelinated axons can conduct at velocities up to 150 m/s.
Detailed explanation-2: -Peripheral nervous system axons, which relay action potentials elicited by various stimuli, can be myelinated to a differing degree by specialized Schwann cells that allow them to conduct the electrical signal 10 times faster than unmyelinated fibers of the same diameter [1].
Detailed explanation-3: -Myelinated neuron are faster because The myelin sheath is a fatty layer made up of the hugely expanded plasma membrane of schwann cells which surround the axon of neurons.