Macroglial are separated into four classes: ogliodendrocytes, Schawnn cells, astrocytes, and ependymal cells. Schwann cells and ogliodendrocytes form the [[myelin sheath]] around neuron [[axons]]. This sheath insulates the [[electrical impulse]] that travels down the axon, but also increase the speed of the electrical propagation by keeping unmylinated spaces along the axon. The impulse jumps between these unmylinated zones called the [[node of Ranvier]]. This form of propagation is referred to as [[Saltatory conduction]]. Schawnn cells mylinate the [[peripheral nervous system]] while ogliodendrocytes mylinate the [[central nervous system]]. Schawnn cells and ogliodendrocytes also help guide axon growth during [[neurological development]]. Astrocytes are important in providing structural support and also aid in metabolic functions. During development of the nervous system astrocytes serve as scaffolding for axons as they grow. Enpendymal cells line the [[ventrical]] cavities in the central nervous system and produce [[cerebral spinal fluid]] and aid in regulating the flow of this liquid medium. | Macroglial are separated into four classes: ogliodendrocytes, Schawnn cells, astrocytes, and ependymal cells. Schwann cells and ogliodendrocytes form the [[myelin sheath]] around neuron [[axons]]. This sheath insulates the [[electrical impulse]] that travels down the axon, but also increase the speed of the electrical propagation by keeping unmylinated spaces along the axon. The impulse jumps between these unmylinated zones called the [[node of Ranvier]]. This form of propagation is referred to as [[Saltatory conduction]]. Schawnn cells mylinate the [[peripheral nervous system]] while ogliodendrocytes mylinate the [[central nervous system]]. Schawnn cells and ogliodendrocytes also help guide axon growth during [[neurological development]]. Astrocytes are important in providing structural support and also aid in metabolic functions. During development of the nervous system astrocytes serve as scaffolding for axons as they grow. Enpendymal cells line the [[ventrical]] cavities in the central nervous system and produce [[cerebral spinal fluid]] and aid in regulating the flow of this liquid medium. |