Illustration of the anatomical structure of a vein. Veins are blood vessels that carry deoxygenated blood from the body to the heart to be reoxygenated. Veins have three layers (from outer to inner): tunica externa, tunica media and tunica intima. Unlike arteries, veins also have valves (centre) to prevent the backflow of blood. Red blood cells are shown in the lumen of the vein. | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / MICHAEL HOFFMANN / MEDICAL GRAPHICS |
Bildgröße: | 7019 px × 4964 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |