PSYC 1000U Lecture Notes - Lecture 3: Myelin, Axon Terminal, Myocyte
21 Oct 2015
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Document Summary
We are our brains: brain controls all our behaviour except for simple reflexes. Changes to genes, the brain, and/or hormones often result in observable behaviour differences. The nervous system is comprised of two major types of cells: neurons: cells that receive, integrate and transmit information (i. e. , permit communication). Features: soma (with nucleus), dendrites, axon, and myelin sheath, terminal branches: glial cells (glia): cells that support neurons (i. e. , support communication). They provide nourishment to neurons, remove waste products, provide insulation around axons: neurons are the communicators. Receive to integrate communicate with other neurons to pass a signal throughout the body: neurons are responsible for thoughts and actions, glial cells support, nourish and protect the neurons. Soma: a. k. a. cell body contains nucleus and much of the chemicals to function. Call body that receives the messages from other cells. Dendrite: tree like branches that receive information form other cells. They send it further to the cell body.
