video1.0<iframe src="https://www.loom.com/embed/43e275b94e734318a8852b46478cd17d" frameborder="0" width="1662" height="1246" webkitallowfullscreen mozallowfullscreen allowfullscreen></iframe>12461662Loomhttps://www.loom.com12461662https://cdn.loom.com/sessions/thumbnails/43e275b94e734318a8852b46478cd17d-9b03ba162a67429f.gif459.012This Loom introduces the organization of the nervous system and the basic structure of neurons. It explains that the CNS consists of the brain and spinal cord, while the PNS includes all nerves outside the CNS, including cranial nerves and spinal nerves. The peripheral nervous system is divided into sensory afferent input that arrives at the CNS and motor efferent output that exits the CNS, with motor further split into somatic voluntary control and autonomic involuntary control. It also describes neuron parts including the soma, dendrites, axon hillock, axon, and myelin with nodes of Ranvier, noting myelin is formed by oligodendrocytes in the CNS and Schwann cells in the PNS.