projections of the surface membrane of each such cell fan out and coil around the axon of neurons in the central nervous system to form the myelin sheath. Oligodendrocytes, moreover, are glia cells that surround and insulate certain axons in the vertebrate brain and spinal cord
belief in the Olympian gods as they were described in the Homeric poems. Olympian religion tended to be favored by the privileged classes, whereas peasants, laborers, and slaves tended to favor the more mystical Dionysiac-Orphic religion. Please see also Dionysiac-Orphic religion.