The answer lies in a membranous structure called myelin ... Schwann cells make myelin in the peripheral nervous system (PNS: nerves) and oligodendrocytes in the central nervous system (CNS ...

The peripheral nervous system (PNS) is the system of nerves and ganglia outside the brain and spinal cord. The PNS consists ...

The nervous system consists of the central nervous system (brain and spinal cord) and the peripheral nervous system (motor nerves, sensory nerves, cranial and spinal nerves, autonomic ganglia ...

and the spinal cord is the pathway for messages sent by the brain to the body and from the body to the brain. The peripheral nervous system is the network of nerves strands that branch off from the ...