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Home Q & A Board Biology-Related Homework Help Anatomy and Physiology
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obarron2 obarron2
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12 years ago
4.The Agawam High School band is playing some lively marches while the coaches are giving pep talks to their respective football squads. Although it is September, it is unseasonably hot (88 degrees Farenheight/31 degrees Celsius) and the band uniforms are wool. Suddenly, Harry the tuba player becomes light-headed and faints. Explain his fainting in terms of vascular events.
Source  Marieb, E, & Hoehn, K. (2008). Human anatomy and physiology (8th ed.)
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12 years ago
Harry’s condition suggests that this is a case of transient vascular shock. Marching in the severe heat of the day caused the cutaneous blood vessels to dilate, which resulted in an increased blood volume pooling in the lower limbs (because of gravity). A subsequent decrease in blood flow to the heart caused Harry’s blood pressure to drop, and his dizziness and fainting was an indication that the brain was not receiving enough blood flow (hence, oxygen).
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