[BIOL 1F25] - Final Exam Guide - Ultimate 50 pages long Study Guide!
29 Mar 2017
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Drosophila (fruit fly)- genetic and development studies: elegans (transparent worm)- Overview of nervous system (chapter 9 of textbook) Central nervous system (cns): consists of brain and spinal cord. Peripheral nervous system (pns): nerve fibers that transmit signals between the cns and organs in other parts of the body. Fibers grouped into bundles called nerves: 43 pairs of nerves. Grey matter contains of cell bodies of neurons. White matter in the sc consists of nerve fibers carrying information to and from the brain. Tracts: carry bundles of nerve fibers with common purpose. Organization & franz joseph study gall of behaviour - phrenology 18th century idea. Postulated the brain not a unitary organ, but collection of at least 35 regions, each with a specific mental function. Believed each could increase in size with use. Great neuro anatomists (cajal and golgi) argued about whether consists of enormous numbers of discrete cells (neurons) or is a continuous system.
