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 ...

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 ...

Reference Article: Facts about the human circulatory system. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. The circulatory system, also ...

Here, learn about the structure of the heart, what each part does, and how it works to support the body. We also explore the electrical impulses and the role of CPR.

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.

Learn how the heart pumps blood round the circulatory system in this guide for learners at 2nd Level Science in Scotland's Cfe Curriculum for Excellence.

The circulatory system is your heart and blood vessels, and it’s essential to keeping your body functioning. This finely tuned system carries oxygen, nutrients, electrolytes, and hormones ...

Medically reviewed by Jeffrey S. Lander, MDMedically reviewed by Jeffrey S. Lander, MD The cardiovascular system, also known as the circulatory system, includes the heart and blood vessels. It plays ...