mcb63-su03-mt-Reyes-exam

mcb63-su03-mt-Reyes-exam - MCB 63 Midterm 4 i Summer...

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Unformatted text preview: MCB 63: Midterm 4 i Summer Session 2003 Multiple Choice: Read the question carefully and circle the correct answer. There is only ONE (1) correct answer per question. If you have any questions please raise your hand and ask for clarification. l. A spinal nerve contains information that is A only sensory in function. B. only motor in function. .; both motor and sensory in function. D only associated with the parasympathetic system. 2. Sensory information will enter the spinal cord by way ofwhich ofthese structures? The dorsal root The ventral root The lateral root The trade route 1:30.006? 3. Damage to the ventral horn of the spinal cord may result in _. Loss ofconsciousness {Be Loss of motor control of muscles C. Loss ofthe sensation oftouch D. Loss of pain sensation from the body 4. Using the patellar reflex (knee-jerk reflex) as an example. if information traveling from the spinal cord to the forebrain is blocked, what will happen to the functioning ofthe spinal reflex? A. The reflex response will remain, unchanged. g: The reflex response will be blocked, due to loss of sensation. (H92 The reflex response will become hyper-sensitive. D. The sympathetic system will block functioning of the reflex response. 5. The structural components ofa neuronal cell will include one ofthe following: A. astrocytes dendritic spines C. ganglia D. synaptic cleft 6. Anatomically. your nose is located F_,__ to your cars. (A; Anterior - medial B. Lateral - dorsal C. Inferior - ventral D. all ofthe above MCB 63: Midterm Summer Session 2003 "a". The spinal nerve associated with muscle control ot‘the back ofthe leg and muscles below the knee is? A. Femoral nerve. B. Radial nerve. C. Median nerve. Sciatic nerve. 8. Ifthe axon ofa neuron is not surrounded by myelin, what will happen to the action potential (information) as it travels down the axon? (Q The action potential will travel slower than in neurons with myclin. B. The action potential will travel faster than in neurons with myelin. C. The action potential will not be affected by changes in myel in. D. The action potential will become stronger as it travels down the axon. 9. Grey Matter in the spinal cord is predominately composed of A. myelinated axons. B. myelinated dendrites. C. unmyelinated glial cells. (pm. unmyelinated neurons. 10. Damage to the ventral root of the spinal cord will result in motor paralysis B. sensory loss from the muscles C. loss of consciousness D. visual problems 1 l. Pyramidal cell (neurons) are found in which brain region? spinal cord @ cerebral cortex . sensory organs (like the eye) cerebellar cortex l2. The dorsal root ganglia contains neurons that transmit information concern ing____ _. Q conscious proprioception. B. ' pain and temperature. . unconscious proprioception. all of the above. 13. While walking down University avenue one foggy and dreary morning. you are startled by tires screeching and a loud banging sound. You turn to see what all the noise is about and see a car has flipped over in the middle ofthe road. You quickly run over to the car and try to help the many people who are there to turn the car over. Suddenly, you see a gentleman in the car lying dazed and confilsed. You first tell him not to move until the medical personnel arrive. While you are waitin g the gentleman tells you he can not move his left leg. As you touch his leg, you ask whether he can feel anything in that same leg; he answers that he has no feeling. / 9 MCB 63: Midterm Summer Session 2003 Assuming he has no head injuries which sensory pathway do you think is involved?. A: Corticospinal pathway (B? Dersal column pathway C. Spinothalamic pathway D. Spinocerebellar pathway l4. “Saturday night Palsy“ is a temporary disorder that is associated with the Q Radial Nerve B. Femoral Nerve C. Cranial Nerve D. The Thalamus 15. Neurosyphilis is a disorder that will severin impair two-point discrimination. Which spinal cord pathway is involved? A Lateral Spinothalamic B. Anterior White Commissure (Q Dorsal Columns D Posterior Spinocerebellar 16. Which spinal nerve is responsible for control of muscles in your thumb, index, and middle finger? This same nerve is involved with a disorder call “Carpal Tunnel Syndrome“, which causes severe discomfort in the palm of the hand and forearm. A. Radial nerve B Spinal nerve Cranial nerve C. 6)) Median-nerve 1?. Body position sense is associated with which pathway in the spinal cord. Corticospinal tract Rubrospinal tract A. B. {Q Spinocerebellar tract D. none ofthe above 18. Syringomyelia is a neural disorder associated with cyst development in the spinal canal. The progression of the disorder appears to cause the cyst to enlarge in a ventral direction from the spinal canal. lfthe cyst reaches the anterior white commissure. which sensation from the periphery will be compromised? Hearing Motor control to the intestines two-point descrrimination A. B. C. pain sensation MC B 63: Midterm Summer Session 2003 19. Sensory information associated with conscious proprioception (Epicritic touch) must pass through the before going to the cerebral cortex. Ventral Horn Ventral root A. B. (C) Thalumus D. Basal plate 20. As the new resident neurologist doing your rounds in the emergency room (ER) at San Francisco General Hospital. you hear several support stachalling your name as a trauma victim is wheeled into the ER. You notice the bullet wound in his abdominal area. The patient is stable. The fellow physicians report signs of internal bleeding, but it appears the patient is going to survive with no complications. However, you notice fi'om your examination that the patient has no sensation or motor control below the level ofthe umbilicus (belly button). YOU realize, from training yoa received in a marvelous class you took at UC Berkeley, that the spinal cord or nerve has been involved. Which vertebral level ofthe spinal cord or spinal nerves are probably involved (dermatorne)? A. Thoracic 2 (T2) B. Cervical 8 (C8) C. Sacral 8 (SS) ® Thoracic 10(T10) 21. Which cells below are not associtated with multipolar neurons? Anterior Horn Cells B Psuedounipolar neurons fl Pyramidal cells [3?) Purkinje cells \, 22. Neurons develop from which primitive embryonic tissue? QR) Ectoderm B. Mesoderm C. Endoderm D. Lubriderm 23. Damage to the region ofthe spinal cord associated with the corticospinal tract will demonstrate symptoms on them? Dorsilateral side ofthe body A. B. The sunny'side of the body © lpsilatera] side ofthe body D. Connaiateral side of the body 24. The disorder SPINA BIFIDA is associated with which neuro-embryonic structure? Anterior Neuropore Notochord A. B. Q?) Posterior Neuropore D. None of the above MCB 63: Midterm Summer Session 2003 25. Amyotrophic Lateral Sclerosis (ALS) is a disorder that first destroys the myelin sheath around lower motor neurons controlling fine motor controt. Which upper motor neuron pathway is being effected? . Dorsal column pathway Corticospina! pathway C. Spinothalamic pathway D. Rubro-spinal pathway 21> Test continued on next page: MCB 63: Midterm identification: Summer Session 2003 Match the lettered regions on the diagram to the functional descriptions numbered below. It is possible that some letters will be used more than once. 26. 27. 28. 29. 30. at _J_.'... L _D__ Structure associated with development of the cerebral cortex. Mesencephalon Develops From the primary brain vesicle rhombencephalon. Secondary brain vesicle associated with the medulla oblongata The thalamus will develop From this secondary brain vesicle. MCB 63: Midterm Summer Session 2003 Identification: Match the lettered regions on the diagram to the functional descriptions numbered below. Letters may be used for more than one answer. 31. film Pathway associated with Unconscious proprioception (Body position sense}. 32. 49* Spinal Canal 33. C Region associated with processing of pain sensation in the spinal cord grey matter. F Destruction of this area will result in loss of motor control ipsilateral to the lesion (injury). 3 5. B Pathway associated with conscious proprioception (Epicritic touch). 36. Destruction ofthis pathway will cause an intention tremor to limbs below the lesion on the ipsilateral side of the body. 38. /1 / 37'. ix D Associated with the sympathetic nervous system. ( V i.) Damage to this structure will cause hyporeflexia of the target structures. 39. ; Anterior white commissure. .31- 40. Spino-Thalamic pathway for pain and temperature MCB 63: Midterm Summer Session 2003 True or False 41. 42. 43. 44. 45. 46. 4?. 48. 49. 50. ‘V ‘4 hh lair-PH H We Identify the statements with either a T for true or an F for false. Please write legibly. If I can't read it, I can't grade it. The secondary brain vescicle, metcncephalon. develops from the rhombencephalon. Damage to the spinothalamic tract will cause loss of unconscious proprioception at the level ofthe injury, on both sides of the body. Not being able to touch your nose with the tip ofyour finger after a night of partying, will involve the cerebellum and the spinocerebellar pathways. Damage to the Radial nerve will cause wrist-drop. Hyper-reflexia is associated with a spinal nerve injury. Anencephaly is associated with faulty closure of the posterior neuropore. The Dorsal column pathways convey information associated with epicritic touch. The Dorsal Root Ganglia is associated with sensory information and psuedounipolar neurons... Demylinating diseases will cause information traveling from one neuron to another to move quicker. I'd rather be in Tahiti. ...
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mcb63-su03-mt-Reyes-exam - MCB 63 Midterm 4 i Summer...

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