ANAT 025 Lecture Notes - Lecture 17: Simple Squamous Epithelium, Vasa Vasorum, Loose Connective Tissue
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Comparison of anatomy of artery vs. anatomy of vein. Notice that wall of an artery is much thicker than a wall of a vein of corresponding size. Look at the tissue that make up the anatomy of each of these two vessels. In bold print down the middle of the illustration, see where they divide the thickness of the wall into 3 basic subdivisions. Beginning on the lumenal surface (inside) of the artery or vein and working out. First layer of tissue = endothelium (what is endothelium? simple squamous epithelium) Moving toward outer surface, next part of that section (the whole section) = tunica intima (innermost section; innermost layer of that is endothelium; outermost layer = internal elastic lamina) Next layer = subendothelial layer (loose connective tissue; part of tunica lamina) Next layer = internal elastic lamina (thin layer of elastic connective tissue) Both arteries and veins have this complete section of tunica intima and the.
