The circulatory system stops diseases and helps maintain homeostasis in the body.
It is believed that the circulatory system is extremely long, stretching about 60,000 miles (100,000 kilometers).
The circulatory system was studied for hundreds of years, appearing in the Ebers Papyrus, an Egyptian medical document dating as far back as the 16th century.
For over 1,500 years, physicians studied the wrong circulatory system model.
In the average lifespan of a human, the heart pumps 1 million barrels of blood.
The body pumps blood to about 75 trillion cells.
Blood takes only 20 seconds to pump throughout the entire circulatory system
