An important support for understanding the difference between artery and vein histology.

In this single-piece model one artery and two veins are represented in great detail.

One vein is longitudinally sectioned to show the closed and open venous valves.

The artery and the right vein are cross-sectioned so the different layers,such as tunica media,elastic membrane and tunica adventitia,can be easily recongnized.

20X life size.