quiz 6 key - An action potential in the presynaptic axon...

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Name_____________________________  BIOLOGY 325H QUIZ 6  [5 pts] _____________________________________________________________ 1.  [2 pts]  Name the three subdivisions of function within the nervous system. ____sensory _________________ ____integrative _______________ ____motor ___________________ 2.  [2 pts] In a presynaptic axon terminal, what molecule acts on synaptic vesicles to cause their exocytosis? Ca +2  ions How does this molecule reach the synaptic vesicles to cause exocytosis?
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Unformatted text preview: An action potential in the presynaptic axon terminal opens Ca-channels in the plasma membrane, permitting Ca +2 ions to flow down their concentration gradient into the cytosol. 3. [1 pt] A typical human genome contains genetic loci for how many different opsin proteins? Name_____________________________ Four: 1 rhodopsin + 3 photopsins (blue; green; red)...
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This note was uploaded on 05/14/2008 for the course BIO 325H taught by Professor Staff during the Spring '08 term at University of Texas.

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quiz 6 key - An action potential in the presynaptic axon...

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