A 17-year-old skateboarder fell while riding down a railing and suffered a fracture at the middle of his humerus. After surgery his surgeon told him nerve damage from the fall would prevent him from being able to extend his wrist and fingers, but he would still be able to extend his elbow. Explain why he can no longer extend his wrist and fingers. Which nerve was injured? Which muscle was unaffected that will enable him to still extend his elbow?
A 17-year-old skateboarder fell while riding down a railing and suffered a fracture at the middle of his humerus. After surgery his surgeon told him nerve damage from the fall would prevent him from being able to extend his wrist and fingers, but he would still be able to extend his elbow. Explain why he can no longer extend his wrist and fingers. Which nerve was injured? Which muscle was unaffected that will enable him to still extend his elbow?
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 17-year-old skateboarder fell while riding down a railing and suffered a fracture at the middle of his humerus. After surgery his surgeon told him nerve damage from the fall would prevent him from being able to extend his wrist and fingers, but he would still be able to extend his elbow. Explain why he can no longer extend his wrist and fingers. Which nerve was injured? Which muscle was unaffected that will enable him to still extend his elbow?
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