PSY 220 Lecture 2: Nervous System Cells & Impulses

• School: University of Miami
• Department: Psychology
• Course: PSY 220
• Professor: Hurwitz Barry

Document Summary

Peripheral nervous system- somatic and autonomic then off autonomic is sympathetic and parasympathetic. The cells of the nervous system are composed of two types of neurons which are glial cells and. The glial cells form the foundational support of the brain and which the neurons rest on them like a spider web: motor neurons- muscle fibers and muscles to move, sensory neurons- provides touch information. Greek for glue and provides protection and support/foundation. Supply nutrients and oxygen, form myelin, destroy and remove decay and debris, prevents toxic build up. Astrocytes- surrounds the synaptic location and to isolate where the neurotransmitters are released. Oligodendrocytes- build myelin sheath around the axon and some of the neurons. Radial glia- guide the migration and the growth of axons and dendrites. *camilo golgi discovered that nerve endings can suck up silver chromate and place it in the nervous system. Santiago ramon y cajal: neuron doctrine or synapses, the spaces between neurons.