The circulatory system consists of three independent systems that work together: the heart (cardiovascular), lungs (pulmonary), and arteries, veins, coronary and portal vessels (systemic). 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 ...

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 ...

This overview of the organs in the body can help people understand how various organs and organ systems work together. Learn more here.

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 heart, blood, and blood vessels make up the circulatory, or cardiovascular, system. Here, learn about some diseases that can affect this system.

Caption Anatomical diagram of Mosura fentoni, showing preserved details of the nervous system in purple, the digestive system in green, and the circulatory system in orange.

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.

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 ...