The blood system transports blood from the heart to the lungs to obtain oxygen. The heart then sends oxygenated blood to the rest of the body via arteries. The veins return the oxygen-depleted blood to the heart to restart the circulation process. Your circulatory system is essential to the health of your organs, muscles, and tissues. Your heart circulates blood throughout your body via a network of arteries and veins (blood vessels). Your cardiovascular system is also known as your blood system. Cardio refers to the heart, while vascular relates to blood vessels. This circulatory system delivers blood to the body's tissues, allowing them to function.
