Final answer:
Statements a) The white matter of the CNS is made up of bundles of axons and b) The gray matter of the CNS is made up of numerous neuron cell bodies are correct, making e) the right answer.
Step-by-step explanation:
Among the statements given, e) Both a and b are correct. That is, a) The white matter of the CNS is made up of bundles of axons, and b) The gray matter of the CNS is made up of numerous neuron cell bodies. The central nervous system (CNS) consists of the brain and spinal cord, where gray matter predominantly includes the neuron cell bodies and is pinkish in living tissue, though it appears gray in unstained cadavers. White matter predominantly consists of myelinated axons, which have a white appearance due to the myelin sheath.
The peripheral nervous system (PNS) comprises nerves that connect the CNS to the body. In the PNS, ganglia, not the white matter, are considered similar to gray matter as they contain neuron cell bodies. The nerves, considered as white matter, are made up of long bundles of myelinated axons. Therefore, statements c) and d) about the structure of the PNS are incorrect.