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The effects of exercise on the cardiovascular and respiratory system
Member rating: No Rating | Words: | Submitted: Wed Nov 10 2004
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The effects of exercise on the cardiovascular and respiratory system Exercise uses up a lot of energy, which the cells derive from oxidizing glucose. Both glucose and oxygen have to be delivered by the blood. This means that the heart has to work harder to pump more blood through the body. This means it has to beat faster in order to achieve a higher throughput. The cardiovascular system responds to exercise by increasing the activity level. The adrenal gland increases the production of the hormones adrenaline and nor adrenaline. These have direct effects on the heart. These hormones cause an increase in the heart rate and the force with which the heart contracts each beat. This increases the total amount of blood that is circulated in the body every minute. That increase in blood circulation is required to meet the increased demand for nitutrients and oxygen that the muscles and other tissure...
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