Heart Disease
Nick Benavidez
Physiology of Exercise
Dr. Larry Rogers
Heart Disease
You need your heart for all your body needs. It pumps about 2000 gallons of blood a day. It takes about 20 seconds for blood to reach
every cell in the body. An artery carries blood out from the heart. A
vein carries blood back to the heart. An average adult heart weighs about
10-13 ounces (300 to 350 grams). The rate which the heart pumps varies
depending on what your doing. When at rest the heart pumps more slowly.
When you run the heart rate increases to provide muscles and other tissues
with additional oxygen they need. The typical heart rate is 72 beats per
minute. Each beat gives out 2-3 ounces of blood pumped into the arterial
system. At this heart rate it beats about 104,000 times a day. The
Superior and Inferior are the biggest veins in the body.
The Superior is really the biggest. These veins have a lot of
carbon dioxide and have oxygen-poor......
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Approximate Word Count: 1595
Approximate Pages: 7 (250 words per double-spaced page)
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