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 body has built-in mechanisms to help maintain equilibrium. Here's everything you need to know about how your body maintains homeostasis during exercise.

How Does Blood Travel Through the Heart? As the heart beats, it pumps blood through a system of blood vessels, called the circulatory system. The vessels are elastic, muscular tubes that carry ...

How does your heart work? Find out how the heart keeps all the blood in your circulatory system flowing.

The circulatory system works towards pumping oxygen-rich blood from the heart's left ventricle into arteries, which then distribute it to tissues and organs.

Your body's circulatory system is a wondrous thing. It's made up of blood vessels that carry blood to and from your heart and also pumps blood to your lungs so you can breathe. It helps grow and ...