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ZOO 250 Ch.13, 14 self quizes.docx

Reflexes do not require a stimulus 7 the following

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Which of the following is not a property of reflexes? Reflexes do not require a stimulus 7. The following nerve is part of the Lumbar Plexus? Femoral 8. Poliomyelitis causes destruction of motor neurons and production of skeletal muscle atrophy from lack of innervation. What is the cause of polio? A viral that spreads by fecal contamination 9. If you were to step on a piece of glass, which reflex would be stimulated? Both the flexor and crossed extension reflexes would be stimulated 10. A reflex in which the sensory input and motor output are on opposite sides of the spinal cord, is called a__ reflex arc? Contralateral 11. Which of the following is not considered a region of the spinal cord? Pelvic 12. Which of the following is not a type of nerve plexus? Axial 13. Which of the following is not an ascending tract? Lateral corticospinal 14. Which of the following structures is the richest in lipid content? White matter 15. Which of the following branches of a spinal nerve has the neurosoma of only sensory neurons? Posterior (dorsal) root 16. Which of the following nerves of the cervical plexus innervates the diaphragm, pleura, and the pericardium? Phrenic 17. (Spinal resection) Referring to the following figure, when a “spinal tap” is needed, from which area is taken? F Neuron Graph
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18. The anterior rami of the spinal nerves form nerve plexuses in all regions except the __ region? Thoracic 19. If spinal cord trauma occurs above the C$ vertebra, which potentially lethal condition can occur? Respiratory failure 20. Voluntary motor impulses leave the spinal cord via the __ of gray matter? Anterior horn 21. The tendon reflex is the inhibition of a muscle’s contraction that occurs when its tendon is excessively stretched? True 22. Motor commands are carried by __from the brain along the spinal cord? Descending tracts 23. Which of the following skin and joint sections does the ulnar nerve innervate? Skin of palmar and medial hand and digits III-V; joints of elbow and hand 24. A nerve fiber is enclosed in its own fibrous sleeve called perineurium? False 25. Epidural anesthesia is introduced to the epidural space b/w the __to block pain signals during pregnancy? Dural sheath and vertebral bones 26. Where is the medullary cone found? At the base of the lumbar enlargement 27. Which is true about white matter? Provides avenues of communication b/w different levels of the CNS 28. A ganglion is a swelling along a nerve containing the cell bodies of peripheral neurons? True 29. You go to the movies after a long day and you begin to nod off as soon as the movie starts…? Stretch (myotatic) 30. Which of the following sensory functions involves neurons in the posterior root ganglion? Touch 31. A nurse pricks your finger to type your blood. You flinch at the pain, pulling your hand back. This is called the __reflex? Flexor (withdrawal) 32. What is the function of the lateral and medial reticulospinal tracts? Balance and posture; regulation of awareness of pain 33. The bundle of nerve roots that occupy the vertebral canal from L2 to S5 is called the? Cauda equina 34. (Spinal cross-section) Referring to the following figure, which letter represents the gray matter? D 35. A ganglion is a? cluster of neurosomas in the PNS 36. The middle layer of the meninges is called the? Arachnoid matter 37. Nerve fibers in a given white matter tract are similar in origin, destination, and function?
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  • Fall '08
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