Here’s how it works. The circulatory system consists of three independent systems that work together: the heart (cardiovascular), lungs (pulmonary), and arteries, veins, coronary and portal ...

The venous system refers to the network of veins that work to deliver deoxygenated blood back to your heart. Your body circulates blood on two different tracks called the systemic circuit and the ...

The circulatory system includes the heart, blood vessels and blood, and is vital for fighting diseases and maintaining homeostasis (proper temperature and pH balance). The system's main function ...