Where are myelinated neurons typically found in the body?

Myelinated neurons are enveloped with Schwann cells, which form a myelin sheath around the axon. they are found in both the central nervous system (CNS) and peripheral nervous system (PNS). 

In the CNS, myelinated neurons are primarily found in the white matter of the brain and spinal cord. In the PNS, myelinated neurons are found in the cranial nerves and spinal nerves. Myelin sheaths are produced by glial cells, specifically oligodendrocytes in the CNS and Schwann cells in the PNS. Therefore, the correct answer is option b) In the spinal cord and cranial nerves.