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I am going to investigate my bodies heart rate when I exercise for certain fixed amounts of time.
Member rating: No Rating | Words: | Submitted: Mon Aug 18 2003
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INTRODUCTION: I am going to investigate my bodies heart rate when I exercise for certain fixed amounts of time. Blood is fluid that circulates in the arteries and veins of the body. Blood is bright red or scarlet when it has been oxygenated in the lungs and passes into the arteries; it becomes bluish red when it has given up its oxygen to nourish the tissues of the body and is returning to the lungs through the veins and the tiny vessels called capillaries. In the lungs, the blood gives up the carbon dioxide wastes it has taken from the tissues, receives a new supply of oxygen, and begins a new cycle (this happens at a fast rate whilst exercising). This movement of blood is brought about by the coordinated activity of the heart, lungs, and blood vessels. The heart is the organ that pumps the blood and circulates it around the...
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