Layers of the Heart Study Guide Test.
Epicardium - CORRECT ANSWER A serous membrane that forms the innermost layer of the pericardium and the outer surface of the heart.
Myocardium - CORRECT ANSWER The myocardium is the muscular wall of the heart, or the heart muscle. It contracts to pump blo...
Layers of the Heart Study Guide Test.
Epicardium - CORRECT ANSWER A serous membrane that forms the innermost layer of the pericardium
and the outer surface of the heart.
Myocardium - CORRECT ANSWER The myocardium is the muscular wall of the heart, or the heart
muscle. It contracts to pump blood out of the heart and then relaxes as the heart refills with returning
blood.
Endocardium - CORRECT ANSWER The endocardium is the innermost layer of tissue that lines the
chambers of the heart. Its cells are embryologically and biologically similar to the endothelial cells that
line blood vessels. The endocardium also provides protection to the valves and heart chambers.
Fibrous Pericardium - CORRECT ANSWER The outer layer of the pericardium is the fibrous pericardium,
comprised of dense connective tissue, which protects the heart, anchors it to the surrounding walls, and
prevents it from overfilling.
Parietal Pericardium - CORRECT ANSWER The outer layer of the pericardium which is a conical sac of
fibrous tissue that surrounds the heart and the roots of the great blood vessels. The pericardium has
outer and inner coats.
Pericardial Cavity - CORRECT ANSWER The pericardial cavity is the potential space formed between the
two layers of serous pericardium around the heart. Normally, it contains a small amount of serous fluid
that acts to reduce surface tension and lubricate.
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