Get to know the functions of your heart, blood vessels, and blood itself and how they work together to maintain your health.

Your heart is a muscular organ that helps circulate your blood, which delivers oxygen and nutrients to your tissues. There are four chambers and four valves in your heart, and each ensures proper ...

Please provide your email address to receive an email when new articles are posted on . Patients with elevated heart rate variability faced a decreased risk for COPD hospitalization. In contrast, an ...

The body's tissues can get injured in many ways, but while some injuries heal perfectly, others don't heal at all. A cut in the skin, for example, usually heals all on its own, while internal organs, ...

Adolescent athletes' cardiovascular system may adapt to increased cardiorespiratory fitness by increasing blood pressure, ...