Function of blood vessels
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I can describe what blood vessels are and what they do.
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Blood vessels transport blood all around the body, to and from your heart.
Arteries are blood vessels. Most arteries deliver blood rich in oxygen to all the parts of the body.
Veins are blood vessels. Most veins return blood low in oxygen to the heart.
Blood is always red. Blood travelling through veins may appear blue because of how light travels through our skin.
Scientists use scientific diagrams to describe different systems in the human body.
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