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YouTubeProfessor Dave Explains
The Circulatory System Part 2: Blood Vessels
Now that we understand the structure and function of the heart, which is to pump blood all around the body, what is the blood traveling around in exactly? Those would be blood vessels. There are many kinds, like arteries, arterioles, capillaries, venules, and veins, and they all have a few differences. Let's zoom in on each of these now! Watch ...
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