A Boston Red Sox left-handed pitcher complains of aching of the left forearm brought on by exercise and relieved by rest. The left hand often becomes colder than the right and is paler when held above the head. The blood pressure in the left arm is 90/60 and in the right arm is 128/82. The 4th and 5th fingers of the left hand often experience numbness and tingling. What condition is the pitcher suffering from? What structures in the neck are involved? Explain the pathophysiological basis for the pitcher’s symptoms.

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
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4. A Boston Red Sox left-handed pitcher complains of aching of the left forearm brought on by exercise and relieved by rest. The left hand often becomes colder than the right and is paler when held above the head. The blood pressure in the left arm is 90/60 and in the right arm is 128/82. The 4th and 5th fingers of the left hand often experience numbness and tingling. What condition is the pitcher suffering from? What structures in the neck are involved? Explain the pathophysiological basis for the pitcher’s symptoms. 

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