Medium-sized artery Muscular Structural characters 1. Very much(10-40 layers) smooth muscle cells intermingled with collagenous F, elastic F 2. Very evident internal and external elastic lamina 3. Very defined 3 layers a Function regulate blood flow to various organsMedium-sized artery ◼ Structural characters 1. Very much (10~40 layers) smooth muscle cells intermingled with collagenous F., elastic F. 2. Very evident internal and external elastic lamina 3. Very defined 3 layers ◼ Function regulate blood flow to various organs Muscular A