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Answer :
The false statement regarding myelination of axons in the peripheral nervous system (PNS) is: "All of the above are TRUE regarding myelination of axons in the peripheral nervous system". The answer is option(E).
Myelination is the process by which the axons of a neuron are covered in a fatty myelin sheath. Myelin is produced by specialized cells known as Schwann cells in the PNS and oligodendrocytes in the central nervous system (CNS).
The sheath insulates the axons and reduces current leakage, allowing for the rapid propagation of action potentials through saltatory conduction.
Saltatory conduction is the process of action potentials leaping from one node of Ranvier to the next in a myelinated axon. This increases the speed of conduction along the axon. Myelination conserves energy by limiting active excitations to the nodes of Ranvier rather than the entire length of the axon.
The question should be:
Which one of the following statements is false with regards to the myelination of axons in the peripheral nervous systems
a) It is carried out by Schwann cells.
b) It insulates the axons to reduce current leakage.
c) It increases the speed of action potential propagation through saltatory conduction.
d) It conserves energy because the active excitations are restricted to the nodes of Ranvier.
e) All of the above are TRUE regarding myelination of axons in the peripheral nervous system.
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