"is(are) mainly composed of nerve fibers with fatty coverings."

Myelin Sheath Fibers is a different fiber deliver impulses from the skin, skeletal muscles, and joints to the CNS. Afferent Division Sensory Division. consists of nerve fibers that convey impulses to the Nervous System from Sensory Receptors. Fatty insulating covering around nerve fibers. In CNS, made of Oligodendrocytes. While Somatic Sensory

explanation:

on disadvantage of hydroelectric power is the cost. another disadvantage of using hydroelectric power is finding a water source powerful enough to harvest hydroelectric power.

the generally accepted parts of modern cell theory include: all known living things are made up of one or more cells. all living cells arise from pre-existing cells by division. the cell is the fundamental unit of structure and function in all living organisms.