Question

Why mylinsheath is not continously present on axon of a neuron?

Answer 1

Answer:

In the nervous system, axons may be myelinated, or unmyelinated. This is the provision of an insulating layer, called a myelin sheath. The myelin membrane is unique in its relatively high lipid to protein ratio. In the peripheral nervous system axons are myelinated by glial cells known as Schwann cells.

Answer 2

Answer:

In nervous system, axins may be myelinated or non myelinated. this isvthe provision of ainsulating substance called myelin sheath. the myelin sheath is unuque in its relatively high lipid to protein ratio.