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The Human Brain

Biology

Quiz 3 :

Gross Anatomy and General Organization of the Central Nervous System

Quiz 3 :

Gross Anatomy and General Organization of the Central Nervous System

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A 25-year-old bull rider developed neck pain and vertigo after landing head first when he was thrown from a bull. Physical examination in the emergency department revealed that the man had decreased pain and temperature sense on the left half of his face and right side of his body, a Horner's syndrome on the left, and hoarseness and unsteady gate. An occlusion in which of the following vessels would most likely explain the deficits experienced by this patient?
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A

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A 74-year-old man was playing poker with his neighbors when he noticed that he was having difficulty picking up his cards with his left hand. Determining that he was fatigued from his day of yard work, he went home and to bed. The next morning he staggered and nearly fell making his way to the bathroom. Concerned about her husband's condition his wife takes him to the emergency room. Neurological examination indicates that the man is unable to elevate and adduct his right eye; however, abduction and depression of his right eye is normal. The eye movement abnormalities in this patient are most indicative of which of the following?
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C

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A 29-year old man was brought to the emergency department following a motor vehicle collision. He has normal pupillary light reflexes, unsteady gait, and loss of pain and temperature sense on the left side of his body and right side of his face. He most likely has a lesion in which of the following areas?
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B

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After suffering a stroke, a 62-year-old man is unable to abduct his right eye. In addition, he has muscle weakness in his upper and lower left limb as well as the right side of his face. The combined deficits in this patient can most accurately be attributed to damage in which of the following vessels?
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A 52-year-old woman sustains a hemorrhagic stroke to the left anterior inferior cerebellar artery. Which of the following symptoms is this patient most likely to experience?
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After graduation an 18-year-old girl and her boyfriend ride his motorcycle to the lake to meet some friends. As they travel the winding road to the lake, a logging truck turns in front of them, causing them to crash. Upon reaching the hospital the girl's upper and lower extremities are extended, and her head is arched back. The posturing exhibited by this patient suggests the damage within the brain is most likely
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A 22-year-old woman complains to her family physician of headaches and difficulty looking up. She explains that the symptoms have developed gradually over a period of several weeks. Physical examination reveals that the woman has large irregular pupils, paralysis of upward gaze in both eyes, impaired convergence, and bilateral ptosis. A magnetic resonance imaging scan is most likely to show a tumor in which of the following areas?
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Which of the following postures is indicative of someone with compression at the level of the mesencephalon?
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