Blood vessel wall anatomy. Illustration of the variation in the thickness of the walls of blood vessels, from thicker (left) to normal (centre) and thinner (right). Arteries are thick blood vessels carrying oxygenated blood around the body away from the heart-lung system. Veins are thinner blood vessels that carry deoxygenated blood as it is returned from the body to the heart-lung system. Capillaries, the smallest blood vessels, are where the oxygen in red blood cells is exchanged with the body's tissues. Smaller arteries are called arterioles, and smaller veins are called venules. | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Dalhoff, Henning |
Bildgröße: | 5366 px × 3272 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |