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Normally, the heart beats at a rate of 60-70 beats per minute. With physical stress, the heart rate may increase. The doctor is thinking of discharged my sister from the hospital in two days. The liver is an organ that will make bile. Each wave of heart contractions is followed by a period of rest. It is up to you whether we continue these experiments. The left ventricle pumps blood through the arteries to all parts of the body.
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