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 ...

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 ...

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

But it's especially important for the circulatory system to function properly. In fact, our bodies are actually designed so that blood circulation depends on us being in semi-constant motion.

Similar to the human circulatory system or lungs, the fruit fly's tracheal system consists of a network of tubes. During the embryonic development of these insects, this network of tubes is filled ...