The CCIM Institute, headquartered in Chicago and an affiliate of the National Association of REALTORSÂ®, awards the CCIM designation to individuals who complete a process based both on commercial and investment real estate theory and practice. Weâll review this process in a moment.
Lesson Summary. The heart wall is composed of three main layers: the epicardium, myocardium, and endocardium. The pericardium (which is formed by the fibrous pericardium, the parietal pericardium and the epicardium) forms the outermost protective layer.
The heart functions involve the supply of oxygenated blood to all parts of the body. The circulatory system consists of three main types of blood vessels: arteries, veins and capillaries. Arteries carry oxygenated blood and distribute it to different parts of the body.