SAMPLE2009Exam3

SAMPLE2009Exam3 - BIPN 142 Exam #3 March 6, 2009 Name...

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p. 1 BIPN 142 Exam #3 March 6, 2009 Name (Print): Student No: Exam guidelines 1. This is a closed book, closed note exam. Work by yourself and do not talk with any other students. You have ~50 min (until 9:50 AM) to hand in the exam. 2. You may work in pen or pencil; however, ONLY EXAMS COMPLETED IN NON- ERASEABLE INK WILL BE ELIGIBLE FOR REGRADES . 3. IT IS ABSOLUTELY ESSENTIAL that you print your name on the top of each page. Pages will be separated for grading. 4. You should confine your answers to the space provided. If you must write outside that space, use the back of the same page, and mark clearly that you have done so. Please do not write in this box. PAGE 2: PAGE 3: PAGE 4: TOTAL POINTS: PAGE 5: PAGE 6: PAGE 7: GRADE:
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Name (print):_________________________________ Student Number ______________________ p. 2 PART A: Circle the best answer. Each correct choice is worth 3 points 1. Upper motor neurons a. control the upper half of the torso. b. synapse on muscles in the eye, neck, and head. c. synapse on local circuit neurons and/or lower motor neurons. d. affect motor patterns only indirectly via their inputs to the basal ganglia. e. None of the above 2. The patellar tendon (knee-jerk) reflex is a. mediated by Golgi tendon organs. b. a monosynaptic reflex arc mediated by Ia afferents. c. a polysynaptic reflex arc that integrates the input from groups Ia, Ib, and II afferents. d. mediated by collaterals of somatosensory afferents. e. a volitional response to the impending impact of an object (i.e., the physician’s rubber hammer) directed toward the knee. 3. Which of the following statements about cat locomotion is false ? a. Flexors play an important role during the swing phase. b. Extensors play an important role during the stance phase. c. Some gaits alternate activity between the left and right legs. d. Some gaits involve synchronous use of forelimbs and hindlimbs. e. It is controlled by a single spinal CPG that always produces left-right alternation within a segment. 4. A “muscle field” a. includes all of the muscles that are co-activated during any given behavior. b. includes all of the upper motor neurons that innervate a particular lower motor neuron. c. is the group of muscles whose activity is directly facilitated by a given upper motor neuron. d. is the force vector produced by stimulating an individual upper motor neuron. e. is the force vector produced by stimulating a small field of cortical premotor neurons.
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This note was uploaded on 10/14/2010 for the course BIOLOGY bibc 102 taught by Professor Scheffler during the Spring '10 term at UCSD.

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SAMPLE2009Exam3 - BIPN 142 Exam #3 March 6, 2009 Name...

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