Endothelium- -Intima Internal- 冠脉血管解剖 elastic lamina -Media Endothelial cells (ECs) External- elastic and smooth muscle cells A lamina Adventitia (SMCs)constitute the bulk of vessel wall cellularity;the remainder of the wall is composed of extracellular matrix (ECM)including elastin, collagen,and B glycosaminoglycans. Elsevier.Kumar e et al:Robbins Basic Pathology 8e-www.stu ntconsult.con Second Clinical Medical College of Southern Medical University Second Clinical Medical College of Southern Medical University Endothelial cells (ECs) and smooth muscle cells (SMCs) constitute the bulk of vessel wall cellularity; the remainder of the wall is composed of extracellular matrix (ECM) including elastin, collagen, and glycosaminoglycans. 冠脉血管解剖