MIT9_14S09_prob33

MIT9_14S09_prob33 - 9.14 MIT Spring 2009 Classes#33-34...

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9.14, MIT, Spring 2009 Classes #33-34 Study Questions: 1. What are the two outputs of the corpus striatum illustrated by Nauta and Feirtag? Use this to explain the meaning of the statement that the major output of the extrapyramidal system is the pyramidal system. 2. Contrast the major source of sensory inputs to the striatum in amphibians and mammals, according to Striedter. Similarly, contrast the major output. (Note: connections that are quantitatively smaller are neglected, although they may be very important in understanding the evolution and functions of the striatum, as noted in classes.) 3. Why do you think the major source of sensory input changed in mammals, i.e., what were the benefits that encouraged the change from the amphibian condition? Thinking along these lines, what would you expect to be the major source of sensory input to the striatum in reptiles? Check this in Striedter. (What about birds?) 4. What is the "ansa lenticularis"?
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