What is the protective outer covering around a nerve cell's axon formed by Schwann cells?

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Multiple Choice

What is the protective outer covering around a nerve cell's axon formed by Schwann cells?

Explanation:
Schwann cells wrap around peripheral nerve fibers to insulate them. The protective outer boundary they form around the axon is the neurilemma, also called the sheath of Schwann. This outer cytoplasmic layer surrounds the inner myelin sheath, which is the insulating part created by the Schwann cell membranes. The axon is the nerve fiber itself, and the nucleus is part of the neuron’s cell body. So the outer covering produced by Schwann cells around the axon is the neurilemma.

Schwann cells wrap around peripheral nerve fibers to insulate them. The protective outer boundary they form around the axon is the neurilemma, also called the sheath of Schwann. This outer cytoplasmic layer surrounds the inner myelin sheath, which is the insulating part created by the Schwann cell membranes. The axon is the nerve fiber itself, and the nucleus is part of the neuron’s cell body. So the outer covering produced by Schwann cells around the axon is the neurilemma.

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