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A 25-year-old woman presents to the physician with a complaint of several episodes of headaches in the past 4 weeks that are affecting her school performance. These episodes are getting progressively worse, and over-the-counter medications do not seem to help. She also mentions having to raise her head each time to look at the board while taking notes; she cannot simply glance up with just her eyes. She has no significant past medical or family history and was otherwise well prior to this visit. Physical examination shows an upward gaze palsy, and convergence-retraction nystagmus. What structure is most likely to be affected in this patient? A. Tegmentum B. Corpora quadrigemina C. Inferior colliculi D. Aqueduct of sylvius E. Third ventricle

A 25-year-old woman presents to the physician with a complaint of several episodes of headaches in the past 4 weeks that are affecting her school performance. These episodes are getting progressively worse, and over-the-counter medications do not seem to help. She also mentions having to raise her head each time to look at the board while taking notes; she cannot simply glance up with just her eyes. She has no significant past medical or family history and was otherwise well prior to this visit. Physical examination shows an upward gaze palsy, and convergence-retraction nystagmus. What structure is most likely to be affected in this patient? A. Tegmentum B. Corpora quadrigemina C. Inferior colliculi D. Aqueduct of sylvius E. Third ventricle

Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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A 25-year-old woman presents to the physician with a complaint of several episodes of headaches in the past 4 weeks that are affecting her school performance. These episodes are getting progressively worse, and over-the-counter medications do not seem to help. She also mentions having to raise her head each time to look at the board while taking notes; she cannot simply glance up with just her eyes. She has no significant past medical or family history and was otherwise well prior to this visit. Physical examination shows an upward gaze palsy, and convergence-retraction nystagmus. What structure is most likely to be affected in this patient? 198 A. Tegmentum B. Corpora quadrigemina C. Inferior colliculi D. Aqueduct of sylvius E. Third ventricle
Transcribed Image Text:A 25-year-old woman presents to the physician with a complaint of several episodes of headaches in the past 4 weeks that are affecting her school performance. These episodes are getting progressively worse, and over-the-counter medications do not seem to help. She also mentions having to raise her head each time to look at the board while taking notes; she cannot simply glance up with just her eyes. She has no significant past medical or family history and was otherwise well prior to this visit. Physical examination shows an upward gaze palsy, and convergence-retraction nystagmus. What structure is most likely to be affected in this patient? 198 A. Tegmentum B. Corpora quadrigemina C. Inferior colliculi D. Aqueduct of sylvius E. Third ventricle
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