Результаты (
английский) 1:
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Normally the heart beats at a speed of 60-70 beats per minute. The physical tension heart rate may increase. The doctor thinks to write out my sister from the hospital in two days. The liver is the organ that secretes bile. For each wave heart rate follows a period of rest. It is up to you whether to continue us these experiments. The left ventricle pumps the blood on the arteries to all parts of the body.
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