The circulatory system consists of one heart, five liters of blood, and approximately 96,000 kilometers of blood vessels, responsible for transporting nutrients and waste throughout the body.

Your heart is an exquisitely engineered pump made almost entirely of muscle. And you can see the extraordinary engineering in action if we slow your heart to a single beat. Inside the cavernous ...

This short film offers a look at respiration and a tour around the circulatory system and digestive system in the human body, through blood vessels and into mitochondria. There is a detailed ...

Rising rates of heart disease are claiming more lives each year, and researchers now believe a lesser-known body measure may offer clues about your future heart health. In recent findings from a large ...

In recent findings from a large study of adults over age 45, a higher Body Roundness Index (BRI) over six years was closely tied to a greater risk of cardiovascular disease (CVD).