Veins vs. Arteries
Veins and arteries are major players in the circulatory system of all vertebrates . They work together to transport blood throughout the body, helping to oxygenate and remove waste from every cell with each heartbeat. Arteries carry oxygenated blood from the heart, while veins carry oxygen-depleted blood back to the heart.
MORE LIKE THIS
Varicose veins - Symptoms and causes - Mayo Clinic
What Happens to Your Body When You Climb Everest