Vascular smooth muscle tissueMedium-sized artery and vein, inferior vena cava (hematoxylin and eosin)Smooth muscle cells of vascular walls exhibit a typical structure #1, #2 and ensure the required vascular tone.
Transverse sections of blood vessels ( artery, vein) contain smooth muscle cells arranged circularly inside the intima and media #1, #2. They form longitudinal layers less often ( inferior vena cava) joining together in bundles in this case.