18.3B: Veins - Medicine LibreTexts
https://med.libretexts.org/Bookshelves/Anatomy_and_Physiology/Anatomy_and_Physiology_(Boundless)/18%3A_Cardiovascular_System%3A_Blood_Vessels/18.3%3A_The_Venous_System/18.3B%3A_Veins
WEBJan 17, 2023 · For example, arteries are more muscular than veins, veins are often closer to the skin, and veins contain valves to help keep blood flowing toward the heart, while arteries do not have valves and carry blood away from the heart. Veins are also called capacitance vessels because they contain 60% of the body’s blood volume.
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