Question

Which of the following statement is correct about the node of Ranvier?

Options

• Axolemma is discontinuous

• Myelin sheath is discontinuous

• Both neurliemma and myiein sheath are discontinuous

• Covered by myelin sheath

Answer 1

Myelin sheath is discontinuous

Explanation:

Schwann cells surround the myelinated nerve fibres, creating a myelin sheath around the axon. Nodes of Ranvier are the spaces between two neighbouring myelin sheaths. As a result, electrical impulses pass across axons more quickly.