SMC - Smooth muscle cells
TA - Tunica adventitia
L - Lumen
Total magnification - 100x
Histo-Tips: When trying to discriminate between a small artery and an arteriole, look for the number of cell layers. Arterioles have a thickness of only 1-2 cells while small arteries have at least 3.
Comments
Good - you also could have
Good - you also could have labeled the endothelial layer (simple squamous) and the smooth muscle layers make up the tunica media. But you labels are correct - you don't have to make changes.