Final answer:
Ependymal cells in the CNS and Schwann cells in the PNS form supportive capsules around cell bodies and myelin sheaths around axons, respectively. Along with satellite cells, they provide nutrients and structural support to neurons.
Step-by-step explanation:
Ependymal cells are the cells that form supportive capsules around cell bodies in the central nervous system (CNS).
They are responsible for producing cerebrospinal fluid which cushions the neurons. In the peripheral nervous system (PNS), Schwann cells are the cells that form the myelin sheath around axons. Satellite cells also exist in the PNS and provide nutrients and structural support to neurons.
Astrocytes, oligodendrocytes, microglia, and ependymal cells are the glial cells found in the CNS that support the neurons in various ways.