Question

Name the following: Material of the sheath around the axon of a nerve.

Answer 1

The sheath around the axon of a nerve is known as the myelin sheath, a lipid-rich layer that allows for rapid signal transmission.

Step-by-step explanation:

The material of the sheath around the axon of a nerve is called the myelin sheath. This insulative layer is lipid-rich and facilitates faster transmission of electrical signals along the axon. The myelin sheath is produced by different types of glial cells: Schwann cells in the peripheral nervous system (PNS) and oligodendrocytes in the central nervous system (CNS). Regularly interspersed along the axon are gaps called the nodes of Ranvier, which aid in the rapid propagation of nerve impulses by allowing them to jump across these gaps along the axon.

Answer 2

Answer:Myelin sheath is formed by oligodendrocytes in the central nervous system and by Schwann cells in the peripheral nervous system.

These cells wrap layer upon layer of their own plasma membrane in a tight spiral around axon.

The insulating layer checks the leakage of charge and lesser stoppage points (nodes of Ranvier) leading to acceleration of the conduction of impulse and conservation of the metabolic energy.

Step-by-step explanation: