BIO365r test2 Draper Spring 2009

BIO365r test2 Draper Spring 2009 - Please do not open exam...

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Unformatted text preview: Please do not open exam until told to do so. Relax. Write your name at the top of every page. Instructions: There are six questions. Answer any 5. If you answer 6 questions, we will grade the Frst 5. There is no extra credit. or each question (1, 2, 3...), answer either the yellow or pink version. Not both. You may answer either version for each question (1-yellow, 2- pink, 3- pink, ect.). Just to clear your mind: Point A is the circle s centre. What is its diameter? BIO365R Spring 2009 Exam 2 Name______________ KEY _________________________ Do not meddle in the affairs of dragons, for you are crunchy and taste good with ketchup. Page 1 1) [yellow] a] In which lobe of the cerebrum is the striate cortex found? 2 pts occipital b] The cell bodies of the sensory neurons are found in what structure? 2 pts dorsal root ganglia c] Neurons carrying proprioceptive information in the spinal cord frst synapse in a structure of the brainstem called what? 2 pts dorsal column nuclei of the medula (also: cuneate/gracile nuclei) d] The thalamus and hypothalamus combined are called what? 2 pts diencephalon e] There is a stripe of skin surface from which all of the information from the arms and upper chest enter the spinal column at the same point. What is this region of the skin called? 3 pts dermatome f] Which segment of the spinal cord receives the information described in part e above? 3 pts cervical (or cuneate region) g] The region of the brainstem that connects the cerebellum to the sensory information is called what? 3 pts pons (other answers: inferior olive & vestibular nucleus of medulla) h] What separates the primary motor cortex from the primary somato-sensory cortex? 4 pts central sulcus i] Which lobe contains the somato-sensory cortex? 4 pts parietal BIO365R Spring 2009 Exam 2 Name______________ KEY _________________________ Do not meddle in the affairs of dragons, for you are crunchy and taste good with ketchup. Page 2 1) [pink] a] There are two motor components of the nervous system. What are they and what are their targets? 5 pts Visceral: autonomic ganglia -> cardiac and smooth muscles; glands Somatic: motor nerves -> skeletal muscles b] Describe the different sensory neuron types. Why would nociception and proprioception use these types of neurons? Be as descriptive as possible. 10 pts A very fast, large diameter, heavily myelinated, carry proprioceptive info. A medium speed, smaller diameter, heavily myelinated, somatic touch A slowest of the myelinated, smallest diameter, pain & thermoception C Fbres slowest of all, not myelinated, secondary pain Nociception is primarily about notiFcation, while proprioception is about control. The very fast Fbres are needed to maintain posture and balance and to control cerebellar reexes such as walking....
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This note was uploaded on 02/21/2010 for the course BIO 45 taught by Professor Sadasivan during the Spring '08 term at University of Texas at Austin.

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BIO365r test2 Draper Spring 2009 - Please do not open exam...

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