Bio125 Final-2009key - Name Bio 125 Final 2009 Put your...

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Name:_________________________ - 1 - Bio 125 Final 2009. Put your name on every page (11 pages total). Part 1 _________________________________ 26pts Part 2_________________________________ 44pts Part 3 __________________________________ 6pts Part 4 __________________________________ 8 pts. Part 5 ___________________________________ 10 pts Part 6 ___________________________________ 6 pts Total __________________________________ 100 pts
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Name:_________________________ - 2 - Part 1: True/ False. If the statement is true, circle true; if the statement is false, circle false. 13 questions 2 points each. 1. (T) During movement, alpha and gamma motoneurons are co-activated. 2. (T) The main function of muscle spindles is to detect changes in muscle length. 3. (F) Whether a transmitter is excitatory or inhibitory depends on the synaptic vesicles that store the transmitter. 4. (F) Clusters of motor neurons which innervate axial (proximal) muscles are located lateral to clusters of motor neurons which innervate distal muscles. 5. (T) The alpha-motorneurons are the only cells which can produce contraction of skeletal muscles of the body below the head. 6. (T) Each Purkinje cell receives excitatory input from hundreds of granule cells. 7. (F) The middle cerebellar peduncle contains efferents from the dentate nucleus to the red nucleus. 8. (F) One side of the cerebellum is functionally related to the contrateral side of the body. 9. (F) Miniature end-plate potentials are caused by ion movements though the resting channels on the muscle membrane. 10. (F) Norepinephrine, epinephrine and serotonin are all made from tyrosine. 11. (F) Calcium channels open in the pre-synaptic terminal in order to change the membrane potential which then allows the synaptic vesicles to fuse. 12. (F) Low frequency stimulation releases large dense core vesicles from the synaptic terminal. 13. (T) In Wernicke's aphasia, speech is fluent, but makes little sense because words and meaning are not correctly linked.
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Name:_________________________ - 3 - Part 2: Multiple choice : circle the best answer. 22 questions 2 points each. 1. Which type of glial cell participates in removing neurotransmitter from the synaptic cleft in the CNS: A. microglia B. schwann cell C. astrocyte D. oligodendrocyte E. ependymal cell 2. Information from the lower nasal retina of the right eye would be found in all the following locations EXCEPT the: 3. Which is of the following is FALSE about muscles and motoneurons:
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