When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. The circulatory system consists of three independent systems that work together: the heart ...

Learn about the anatomy of the heart and how its chambers, valves, and vessels work together to maintain effective blood circulation throughout the body to sustain life.

Your circulatory system contains three blood vessel types: arteries, veins, and capillaries. Arteries carry blood from the heart, unlike veins, which carry blood to the heart. According to the ...

Your circulatory or cardiovascular system serves a vital function by delivering oxygen and nutrients to all the organs and tissues of your body. Learn more about how the circulatory system works ...

Arteries are blood vessels. Most carry oxygen-rich blood from the heart to various organs and tissues. Arteries are a part of the circulatory system, along with the heart and other blood vessels ...