Exam+2+--+Fall+2005+--+Blank

Exam+2+--+Fall+2005+--+Blank - What can you determine from...

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What can you determine from this data? a) Cell A is tonic and Cell B is phasic b) Cell B is tonic nd Cell A is phasic c) Cell A and B are both tonic d) Cell A and B are both phasic e) Cannot be determined frm Info given 2. O±-center ganglion cells_____________their spike frequency when the center of their receptive ²eld is stimulated by more light than the surrounding area. a) increase b) decrease c) Do not change
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Exam 2 Student lD: 1234 5678 3. The blood-brain barrier a) completely regulates everything passing between the blood and the brain b) is anatomically related to the formation of tight junctions between adjacent capillary endothelial cells c) uses selectivity of carrier – mediated diffusion to control passage to/from the brain d) b and c e) a, b, and c 4. lf you had a brain injury that affected the limbic system it would limit your ability to a) make movements involving the extremities, such as arm gestures b) experience and expressing emotions. c) respond to hunger. d) control your heartrate. e) none of the above. 5. Resting( embrane) potential is determined primarily by the popultion of a) leak channels in the plasma membrane. b) voltage-gated channels in the plasma membrane. c) ligand-gate channels in the plasma membrane. d) stretch-activated channels in the plasma membrane. e) phosphorylation dependent channels in the plasma membrane. 6. Which of the following events are associated with a normal action potential in a neuronal membrane? a) Flow of cations into the cell b) Flow of cations out of the cell c) Flow of anions into the cell d) Both a and b are correct. e) Both b and c are correct. 7. You have discovered a new type of voltage-gated sodium channel that has a super inactivation gate. The gate closes as normal, but takes at least 15 seconds to reset itself. Which of the following is true for a neuron expressing this type of channel?
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This note was uploaded on 07/11/2011 for the course BIOLOGY 225 taught by Professor Pavgi during the Spring '10 term at University of Michigan.

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Exam+2+--+Fall+2005+--+Blank - What can you determine from...

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