Vein cross-section,light micrograph. This is a cross-section through a vein,one of the blood vessels bringing blood back to the heart from the body tissues. The section shows the three layers that make up the walls of a blood vessel. This wall surrounds the central space (lumen). The layers,from inner to outer,are the tunica intima (endothelium),the tunica media (smooth muscle),and the tunica externa (connective tissue). The walls of veins are not as thick as arteries,as the blood is at a lower pressure | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / PROF. R. WEGMANN |
Bildgröße: | 5094 px × 3430 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |