Unlike arteries, veins contain valves that prevent backward flow as blood travels against gravity, particularly in the legs. When these valves weaken or fail, circulation problems often develop.

Arteries and veins (also called blood vessels) are tubes of muscle that your blood flows through. Arteries carry blood away from the heart to the rest of the body. Veins push blood back to your heart.

Your circulatory system contains three blood vessel types: arteries, veins, and capillaries. Arteries carry blood from the heart, unlike veins, which carry blood to the heart. According to the ...

Arteries are red, veins are blue: Students learn the real nature of the heart on Valentine's Day. Published: ... veins, arteries and valves that was before them on a table in their classroom. ...

Radiologists have developed a new technique for capturing images of chest veins that eases diagnosis of venous diseases. Multi-detector computed tomography (CT) scanners are traditionally used to ...

Heart surgery patients fare better when surgeons bypass their blockages using arteries grafted from an arm rather than veins grafted from a leg, U of T research shows. The Radial Artery Patency Study, ...