Fall 2007 Neurophysiology Section Exam (PGY 300)

Fall 2007 Neurophysiology Section Exam (PGY 300) - Fall...

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Fall 2007 Neurophysiology Section Exam 1. When glutamate opens a channel at a synapse, this is an example of a: a) Voltage gated channel b) Action potential c) Ligand gated channel* d) hyperpolarization e) Mechanically gated channel 2. If a neuron is kept depolarized at 0 mV for a second, in what state are voltage- dependent sodium channels most likely to be found ? a) Activation gate open, inactivation gate closed* b) Activation gate open, inactivation gate open c) Activation gate closed, inactivation gate closed d) Activation gate closed, inactivation gate open e) Any of the above 3. Which of the following is an example of the metabotropic receptor? a) the acetylcholine receptor at the neuromuscular junction b) the inhibitory glycine receptor c) the preganglionic sympathetic acetylcholine receptor d) the glycine receptor on the NMDA receptor e) the postganglionic sympathetic adrenergic receptor 4. Which of the following is not involved in the control of limb movement? a) Pons b) Primary motor cortex c) Cerebellum d) Thalamus* e) Broca’s area* 5. Which cells are essential for formation of the blood-brain barrier? a) Hair cells b) Schwann cells c) Red blood cells d) Astrocytes* e) oligodendrocytes
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6. In hyperkalemia, is there a change in the potassium equilibrium potential and is there an effect on the size of the stimulus needed to produce an action potential? a) Yes, the potassium equilibrium potential becomes more positive and a smaller stimulus is needed to produce an action potential* b) Yes, the potassium equilibrium potential becomes more negative and a smaller stimulus is needed to produce an action potential c) Yes, the potassium equilibrium potential becomes more positive and a larger stimulus is needed to produce an action potential d) Yes, the potassium equilibrium potential becomes more negative and a larger
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This note was uploaded on 04/17/2008 for the course PGY 300 taught by Professor Krasney during the Fall '05 term at SUNY Buffalo.

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Fall 2007 Neurophysiology Section Exam (PGY 300) - Fall...

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