Final answer:
Astrocytes and oligodendrocytes are types of glial cells that support and maintain neurons, which are the primary communicators in the nervous system.
Step-by-step explanation:
The question pertains to the identification of glial cells or neurons based on given descriptions. Astrocytes and oligodendrocytes, mentioned in the descriptions, are types of glial cells. Astrocytes are responsible for supporting neuronal function by regulating the chemical environment around neurons, providing nutrients, and offering structural support. Oligodendrocytes generate the myelin sheath in the central nervous system, which insulates axons and enhances the speed and efficiency of electrical impulse transmission. Neurons are the primary communicators in the nervous system, responsible for sending electrical and chemical signals through their dendrites and axons. While glial cells, such as astrocytes and oligodendrocytes, provide essential support and maintenance, neurons execute the computational and communicative functions.