What Factors Raise Heart Rate Heart Rate Increased Heart Rate the Heart Anatomy Cardiac Exert by Melissa Patterson | Sciences 360
"What Factors Raise Heart Rate Heart Rate Increased Heart Rate the Heart Anatomy Cardiac Exert"
Overexposure to high heat and/or humidity will cause the blood vessels in the body to dilate which increases the pressure that the heart must exert to expedite blood travel through the arteries and veins. This rapid expedition of blood flow is due to the body’s attempt to naturally cool down by perspiring. The sweat upon the body cools as it dries, lowering the internal temperature to a more tolerable level. Extreme overexposure to high heat and humidity can induce such an elevated increase in heart rate that cardiac complications are possible. Dehydration that accompanies high heat and humidity overexposure, can also prove life-threatening. When dehydration occurs as a result of overheating, the body loses valuable water through sweating to lower the body's temperature, and/or inadequate fluid intake to replace low fluid levels in the body is scant or absent.
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