PHYSIOLOGY
CARDIOVASCULAR PHYSIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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TRUE
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FALSE
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Either A or B
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None of the above
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Detailed explanation-1: -Explanation: False. Blood helps regulate body temperature by distributing heat throughout the body, but it does not directly cool the body. When the body overheats, blood vessels near the surface of the skin dilate to allow more blood to flow through them, which helps dissipate heat.
Detailed explanation-2: -Heat transfer via the flowing blood (i.e. vascular convective heat transfer) is the most important heat-exchange pathway inside the body. This pathway is particularly important when metabolic heat production increases many-fold during exercise.
Detailed explanation-3: -Keeping your cool On a hot day, your cardiovascular system ramps up its efforts to radiate heat to cool you down. Your heart beats faster and pumps harder, and may circulate two to four times as much blood each minute as it does on a cool day.