PSYC 100 Lecture Notes - Lecture 5: Reuptake, Schizophrenia, Morphine

• School: Queen's University
• Department: Psychology
• Course: PSYC 100
• Professor: Jill L Atkinson

Document Summary

Objectives: describe the divisions of the nervous system, describe the spinal reflex arc. Combination of several subsystems: central nervous system (cns), brain and spinal cord communicates with all sensory organs and muscles (except those in head, composed of neurons and glia, peripheral nervous system (pns): Includes cranial nerves and spinal nerves transmit sensory info from body to. Supporting cells, there are different kinds and serve to support and protect to help neurons work. Supply oxygen and nutrients, remove dead cells and serve as protective insulation around axons of neurons. A neuron refers to one individual neural cell, nerve refers to a bundle of axon fibres, nerves entirely within the brain and spinal cord are tracts. Cell body: contain structures, maintain health and metabolism. Nucleus: contains genes, directs manufacture of proteins needed for cell to work. Axons: transmit info from one neuron to next. Myelin sheath: covers axon to insulate, impulses travel faster and more efficiently.