The Circulatory System has many different and useful functions but is usually divided into three main parts: The Heart, the Blood Vessels and the Blood.
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Blood VesselsThe blood vessels are the tubes that carry the blood everywhere in your body. They carry blood to the heart, and send the blood from the heart all around the body. Luckily, they are situated all around the body. If you look at your wrist or on your neck, you may see the colour of the vessels on your skin. Most likely, you will have some red lines and some blue lines. These are the different kind of vessels that you will find, as well as another kind of vessel that may not be so obvious on your skin:
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