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Investigating the effect of exercise on heart rate.
Member rating: No Rating | Words: | Submitted: Wed Nov 12 2003
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Investigating the effect of exercise on heart rate Planning The heart is a four-chambered muscular pump; left and right atrium and left and right ventricles. The heart contains veins and arteries. The arteries are thick walled muscular tubes, which carry blood away from the heart. The artery leading from the heart to the lung, the pulmonary artery is the only artery that carries de-oxygenated blood. Veins are thin walled tubes, which carry blood back to the heart; they have a large diameter and valves. The veins returning blood from all of the body minus the lungs are called the venae cavae; the vein from the lungs is called the pulmonary vein and is the only vein to carry oxygenated blood. Heart rate is the measuring of the number of times the heart beats per minute. During exercise the heart rate increases to pump more blood to the muscles all over the...
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