Final answer:
The nervous system is rich in myelin, which is a lipid-rich insulating substance that surrounds the axons of many neurons. Myelin allows for faster transmission of electrical signals and is produced by glial cells called oligodendrocytes in the central nervous system (CNS) and Schwann cells in the peripheral nervous system (PNS).
Step-by-step explanation:
The nervous system is rich in myelin; myelin sheaths contain a high content of galactocerebroside. Myelin is a lipid-rich insulating substance that surrounds the axons of many neurons, allowing for faster transmission of electrical signals.
It is produced by glial cells called oligodendrocytes in the central nervous system (CNS) and Schwann cells in the peripheral nervous system (PNS).