Get to know the functions of your heart, blood vessels, and blood itself and how they work together to maintain your health.

Arteries carry oxygenated blood away from your heart. They have thick walls and a muscular layer that keeps your blood moving. Arteries can be as wide as a nickel (about two centimeters). They are the ...

The human circulatory system represents an intricate network of vessels that extends throughout the entire body. This complex arrangement of arteries, veins, and capillaries works continuously to ...

Medically reviewed by Rochelle Collins, DOMedically reviewed by Rochelle Collins, DO The portal vein, or hepatic portal vein, is the main blood vessel of the portal venous system (PVS), which delivers ...

The cardiovascular system consists of the heart, blood vessels, and blood. Its primary function is to transport nutrients and oxygen-rich blood to all parts of the body and to carry deoxygenated blood ...

“If the varicose veins are associated with chronic venous insufficiency or from poor blood flow back to the heart from ...

The popliteal artery branches off from the femoral artery. It is located in the knee and the back of the leg. Its courses near the adductor canal and the adductor hiatus, distinctive open areas inside ...

The saphenous-vein graft is the most common conduit for coronary-artery bypass grafting (CABG). The influence of the vein-graft harvesting technique on long-term clinical outcomes has not been well ...