Question

Complete the sentences describing the insulation of an axon. lipid synapses Schwann cells nodes of Ranvier oligodendrocytes cell membrane insulator myelin sheath axon hillocks carbohydrate Axons of the peripheral nervous system are associated with neuroglia cells called These cells, wrapped repeatedly around the axon, form a coating called a of multiple layers of the of the neuroglia cells. . It consists Myelin consists of protein and large amounts of white appearance. giving heavily myelinated tissue a As the cells wrap around and around the axon, cytoplasm ends up in the outermost wrapping of the cell Because myelinis nonpolar, it prevents ions from accessing the axon surface, serving as an electrical to the axon. Gaps between neighboring segments of the myelin sheath are called the axon is not insulated. . At these points,

Answer 1

Answers in order.

1. Schwann cells.
2. Myelin sheath , cell membrane.
3. Lipid.
4. Insulator.
5. Nodes of Ranvier.

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