So Tunica Intima.

And intima is kind of the intimate layer, the intimate coating of the vessels

It lies between the tunica intima on the inside and the tunica externa on the outside.

And together the basement membrane and endothelial cells, they make up a layer called the Tunica Intima.

The tunicae of blood vessels are three layers an inner layer (the tunica intima), a middle layer (the tunica media), and an outer layer (the tunica adventitia).

One way to see atheroma is the very invasive and costly IVUS ultrasound technology it gives us the precise volume of the inside intima plus the central media layers of about of artery length.

So let's say you have a vein. On the inside it has that tunica intima layer and I'm not going to draw all of the cells out because now you know what that represents.