Exam 3 Study Guide
Exam 3 Study Guide KNR 181
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This 4 page Study Guide was uploaded by Monica Notetaker on Monday November 16, 2015. The Study Guide belongs to KNR 181 at Illinois State University taught by Megan Taylor in Fall 2015. Since its upload, it has received 81 views. For similar materials see Anatomy and Physiology I in Kinesiology at Illinois State University.
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Date Created: 11/16/15
Chapter 11 1. Which of the following structures is not part of the central nervous system? b. a nerve 2. Match the names of the supporting cells found in column B with the appropriate descriptions in column A. 1. d. oligodendrocyte 2. b. ependymal cell 3. f. Schwann cell 4. c. microglial cell 5. a. astrocyte 3. What type of current flows through the axolemma during the steep phase of repolarization? b. chiefly a potassium current 5. The velocity of nerve impulse conduction is greatest in a. heavily myelinated, large-diameter fibers 6. Chemical synapses are characterized by all the following except c. ions flowing through protein channels from the presynaptic to the postsynaptic neuron 9. Inhibition of acetylcholinesterase by poisoning blocks neurotransmission at the neuromuscular junction because c. Ach is not degraded, hence prolonged depolarization is enforced on the postsynaptic cell 10. The anatomical region of a multipolar neuron where the SP is initiated is the c. axon hillock 11. An IPSP is inhibitory because a. it hyperpolarized the postsynaptic membrane Chapter 12 1. The primary motor cortex, Broca’s area, and the premotor cortex are located in which lobe? a. frontal 2. The innermost layer of the meninges, delicate and adjacent to the brain tissue, is the d. pia mater 7. Destruction of the ventral horn cells of the spinal cord c. voluntary motor impulses 8. Fiber tracts that allow neurons within the same cerebral hemisphere to communicate are a. association fibers 19. Describe the role of the cerebellum in maintaining smooth, coordinated skeletal muscle activity. The role of the cerebellum in maintaining smooth, coordinated skeletal muscle activity is that it receives impulses and then decides what the proper movement is and then sends a plan to the cerebral motor area. Also it coordinates between gross and fine motor tasks, provides instructions to motor cortex, helps with balance, and is capable of learning complex motor activities. 26. List four ways in which the CNS is protected. -Skull -Meninges -Cerebrospinal fluid -Blood-brain barrier Chapter 13 1. The large onion-shaped receptors that are found deep in the dermis and in subcutaneous tissue and that respond to deep pressure are b. lamellar corpuscles 2. Proprioceptors include all of the following except c. tactile discs 5. Dorsal root ganglia contain e. cell bodies of sensory neurons 6. The connective tissue sheath that surrounds a fascicle of nerve fibers is the c. perineurium 8. 1. f. oculomotor causes pupillary constriction 2. i. trigeminal the major sensory nerve of the face 3. b. accessory serves the sternocleido-mastoid and trapezius muscles 4. g,h olfactory, optic purely sensory (two nerves) 5. e. hypoglossal serves the tongue muscles 6. i. trigeminal allows you to chew your food 7. c. facial impaired in Bell’s palsy 8. k. vagus helps regulate heart activity 9. l. vestibulocochlear helps you hear and maintain your balance 10. c,d,f,k facial, glossopharyngeal, oculomotor, vagus contain parasympathetic motor fibers (four nerves) 9. 1. b. cervial;6 phrenic The diaphragm 2. d. sacral;8 tibial muscles of the posterior leg 3. c. lumbar;2 femoral anterior thigh muscles 4. c. lumbar;5 obturator medial thigh muscles 5. a. brachial;4 musculocutaneous anterior arm muscles that flex the forearm 6. a. brachial ;3 median,9 ulnar muscles that flex the wrist and digits (two nerves) 7. a. brachial;7 radial muscles that extend the wrist and digits 8. a. brachial;7 radial skin and extensor muscles of the posterior arm 9. d. sacral ;1 common fibular fibularis muscles, tibialis anterior, and toe extensors 10. a. brachial;3 median, 4 musculocutaneous, 7radial, 9 ulnar elbow joint 10. 1. a. exteroceptor; 1 chemoreceptor, 5 thermoreceptor you are enjoying an ice cream cone 2. a. exteroceptor; 3 nociceptor , 5 thermoreceptor you have just scalded yourself with hot coffee 3. a. exteroceptor; 4 photoreceptor the retinas of your eyes are stimulated 4. a. exteroceptor; 2 mechanoreceptor you bump (lightly) into someone 5. c. proprioceptor; 2 mechanoreceptor you are in a completely dark room and reaching toward the light switch 6. b. interoceptor; 2 mechanoreceptor you feel uncomfortable after a large meal Chapter 14 1. All of the following characterize the ANS except d. innervation of skeletal muscles 2. 1. S; Short preganglionic, long postganglionic fibers 2. P; intramural ganglia 3. P; craniosacral part 4. S; adrenergic fibers 5. S; cervical ganglia 6. P; otic and ciliary ganglia 7. P; generally short-duration action 8. S; increases heart rate and blood pressure 9. P; increases gastric motility and secretion of lacrimal, salivary, and digestive juices 10. S; innervates blood vessels 11. P; most active when you are relaxing in a hammock 12. S; active when you are running in the Boston Marathon 7. Indicate the results of sympathetic activation of the following structures: sweat glands, eye pupils, adrenal medullae, heart, bronchioles of the lungs, liver, blood vessels of vigorously working skeletal muscles, blood vessels of digestive viscera, salivary glands. -sweat glands: stimulates copious sweating eye pupils: dilates pupil adrenal medullae: secrete epinephrine and norepinephrine heart: dilates blood vessels lungs: dilates bronchioles liver: stimulates release of glucose to blood blood vessels: constricts and raises blood pressure salivary glands: stimulates secretion 11. Which area of the brain is most directly involved in mediating autonomic reflexes? -Medulla Oblongata
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