During exercise the trained body learns to redistribute blood from less active tissues like the digestive organs & kidneys to the heart & skeletal muscles.
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During exercise, blood flow to certain organs, such as the brain, remains relatively constant despite increases in overall cardiac output. This is crucial for maintaining adequate oxygen and nutrient delivery to the brain. Additionally, the kidneys also show little change in blood flow during exercise, as their primary functions are regulated by various hormonal mechanisms rather than fluctuating demand during physical activity.
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Your knees may be red and hot after exercise due to increased blood flow to the area, which helps repair and nourish the muscles and tissues that were worked during the exercise. This can cause temporary inflammation and warmth in the knees.
Exercise places greater oxygen demands on the body, therefore signaling the respiratory center to increase the rate of respiration in order to increase the oxygen supply to the body's muscles and other tissues.
Vasodilation is the widening of blood vessels resulting from relaxation of the muscular wall of the vessels. Usually occurs during exercise, so that more oxygenated blood can be pumped to the body's tissues. Vasodilation is the widening of blood vessels resulting from relaxation of the muscular wall of the vessels. Usually occurs during exercise, so that more oxygenated blood can be pumped to the body's tissues.
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