The human heart beats more than 100,000 times every day, pumping almost 2,000 gallons of oxygen-rich blood through the aorta to the rest of the body. About 5 percent of that flow finds its way to two major vessels—the coronary arteries—which channel it to a network of progressively smaller blood vessels that feed each fiber of the cardiac muscle.
from Scientific American Content: Global
0 comments:
Post a Comment