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.
The epicardium is the layer of muscle found covering the external surfaces of the heart. It is directly fused with the myocardium internally and is in contact with the serous layer of the pericardium. It is sometimes considered as a division of the inner layer of the pericardium.
The heart has two upper receiving chambers, called atria, and two lower pumping chambers, called ventricles. The heart also has a built-in electrical system that controls and coordinates its pumping function.