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Review Sheet 21- Spinal Cord, Spinal Nerves, and the

Review Sheet 21- Spinal Cord, Spinal Nerves, and the -...

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Unformatted text preview: REVIEW SHEET NAM E EXERCISE LAB TIM E/DATE Spinal Cord, Spinal Nerves, and the Autonomic Nervous System Anatomy of the Spinal Cord 1. Match each anatomical term in the key to the descriptions given below. Key: 3.. cauda equina b. conus medullaris c. filum terminale d. foramen magnum 1. most superior boundary of the spinal cord 2. meningeal extension beyond the Spinal cord terminus 3. spinal cord terminus 4. collection of spinal nerves traveling in the vertebral canal below the terminus of the spinal cord 2. Match the key letters on the diagram with the following terms. 1. arachnoid mater _ 6. dorsal root of spinal _ 11. spinal nerve nerve 2. central canal _ 12. ventral (anterior) horn 7. dura mater 3. dorsal (posterior) _ 13. ventral ramus of spinal horn — 8. gray commissure nerve 4. dorsal ramus of spinal — 9. lateral horn — 14. ventral root of spinal nerve nerve 10. pia mater — 15. white matter 5. dorsal root ganglion 141 3. Choose the proper answer from the following key to respond to the descriptions relating to spinal cord anatomy. Key: a. sensory b. motor c. both sensory and motor (:1. 1. neuron type found in dorsal horn — 4. 2. neuron type found in ventral horn — 5. 3. neuron type in dorsal root ganglion — 6. 4. Where in the vertebral column is a lumbar puncture generally done? interneurons fiber type in ventral root fiber type in dorsal root fiber type in spinal nerve vertebrae. Why is this the site of choice? 5. The spinal cord is enlarged in two regions. the and the regions. What is the significance of these enlargements? 6. How does the position of the gray and white matter differ in the spinal cord and the cerebral hemispheres? 7. From the key, choose the name of the tract that might be damaged when the following conditions are observed. (More than one choice may apply.) 1. uncoordinated movement Key: 2. 2. lack of voluntary movement a 3. tremors, jerky movements f; 4. diminished pain perception E 5. diminished sense of touch 3' k. Dissection of the Spinal Cord 8. Compare and contrast the meninges of the spinal cord and the brain. fasciculus cuneatus fasciculus gracilis lateral corticospinal tract anterior corticospinal tract tectospinal tract rubrospinal tract vestibulospinal tract lateral spinothalamic tract anterior spinothalamic tract posterior spinocerebellar tract anterior spinocerebellar tract meninges: vertebrai bone and the darn. but the darn ofthe brain is tightiy adhered to the sknli. 9. How can you distinguish between the dorsal and ventral horns? 142 Review Sheet 21 Spinal Nerves and Nerve Plexuses 10. In the human, there are 31 pairs of spinal nerves, named according to the region of the vertebral column from which they is- sue. The spinal nerves are named below. Indicate how they are numbered. cervical nerves sacral nerves lumbar nerves thoracic nerves 11. The ventral rami of spinal nerves C1 through T1 and T12 through S4 take part in forming 5 which serve the of the body. The ventral rami of T2 through T12 run between the ribs to serve the . The dorsal rami of the spinal nerves serve 12. What would happen if the following structures were damaged or transected? (Use the key choices for responses.) Key: a. loss of motor function b. loss of sensory function c. loss of both motor and sensory function 1. dorsal root of a spinal nerve _ 3. ventral ramus of a spinal nerve 2. ventral root of a spinal nerve 13. Define plexus. 14. Name the major nerves that serve the following body areas.. head, neck, shoulders (name plexus only) 2. diaphragm 3. posterior thigh 4. leg and foot (name two) 5. anterior forearm muscles (name two) 6. arm muscles (name two) 7. abdominal wall (name plexus only) 8. anterior thigh 9. media] side of the hand The Autonomic Nervous System 15. For the most part, sympathetic and parasympathetic fibers serve the same organs and structures. How can they exert antag- onistic effects? (After all, nerve impulses are nerve impulses—aren’t they?) Review Sheet 21 143 16. Name three structures that receive sympathetic but not parasympathetic innervation. 17. A pelvic splanchnic nerve contains {circle one): a. preganglionic sympathetic fibers c. preganglionic parasympathetic fibers b. postganglionic sympathetic fibers (1. postganglionic parasympathetic fibers 18. The following chart states a number of conditions. Use a check mark to show which division of the autonomic nervous sys- tem is involved in each. —— —— —— —— —— —— —— — “Fight—or—flight" system _ Has more specific control (Look it up!) Galvanic Skin Response Using BIOPAC® 19. Describe exactly how, from a physiological standpoint, GSR can be correlated with activity of the autonomic nervous system. 20. Based on this brief and unprofessional exposure to a polygraph, explain why this might not be an exact tool for testing the sincerity and honesty of a subject. 144 Review Sheet 21 ...
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