Question

The insulating sheath that facilitates rapid movement of the action potential down to the axon is known as which of the following?

Answer 1

The insulating sheath that facilitates rapid movement of the action potential down the axon is called the myelin sheath. It acts as an electrical insulator, allowing the action potential to 'jump' from one node of Ranvier to the next, a process known as saltatory conduction.

Step-by-step explanation:

The insulating sheath that facilitates rapid movement of the action potential down the axon is called the myelin sheath. The myelin sheath is a lipid layer produced by glial cells, such as Schwann cells in the peripheral nervous system. It acts as an electrical insulator, allowing the action potential to 'jump' from one node of Ranvier to the next, a process known as saltatory conduction.