Exam_3_2009_Dr. Govindarajan_Answerkey

Exam_3_2009_Dr. Govindarajan_Answerkey - PHRM3450 EXAM 3...

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PHRM3450: EXAM 3 (SEP 29, 2009) ANSWERS KEY Intro Neurophys (I, II); Brain-Cranial nerves (I, II) and Spinal cord-Spinal nerves (I, II) Each of the following questions only has 1 correct answer. Choose the best answer for each question and mark it in the scantron sheet provided. Each question carries 1.5 points (Total 50 x 1.5 = 75 points) 1. Which of the following is NOT a part of the peripheral nervous system? A. Cranial nerve B. Ganglion C. Spinal cord D. Spinal nerve 2. The sympathetic and parasympathetic divisions are subdivisions of the 3. Which of the following effectors is/are NOT innervated by the autonomic nervous system? 4. Which one of the following types of neuroglial cells is found in the peripheral nervous system? 5 . Which of the following types of neuroglia are found in the choroid plexus of the ventricles of the brain, and produce cerebrospinal fluid? A. Astrocytes B. Microglia C. Ependymal cells D. Oligodendrocytes 6. Nodes of Ranvier are 1
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7. When a nerve cell membrane changes from positive inside to negative inside, the cell membrane is undergoing 8. Which type of propagation occurs along a myelinated axon? 9. Which one of the following statements is NOT true concerning the resting membrane potential? A. The membrane is relatively more permeable to potassium ions than to sodium ions B. Potassium ions are constantly moving out of the cell down their concentration gradient C. Sodium ions are in relatively higher concentration inside the cell than outside D. The membrane is relatively permeable to chloride ions 10. During the repolarization phase of an action potential, which of the following is the primary activity?
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