Heart --  Examine the major features of the heart on both slides. An H&E stained heart specimen is on.

• Identify the three layers of the heart wall.
• The thin endocardium is only present on the "bulges" on one side of the section.
• The myocardium is the thickest layer and contains cardiac muscle, connective tissue, and small blood vessels.
• The epicardium is a relatively thick layer of fatty connective tissue, containing small nerves and large coronary vessels.
• Identify Purkinje fibers of the heart's conduction system near the endocardium and epicardium.

Compare and contrast at least 3 histological features of the endocardium and the epicardium.

The heart valves are next.