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Anatomy
and Electrophysiology
Layers of
the Heart
The heart wall is
arranged into three layers.
- Pericardium is
the sac that encloses the heart. It is also known as the outermost layer
of the heart.
- Myocardium is
the thickest layer of the heart made of pure muscle and it gets damaged
during a heart attack. It makes up the bulk of the heart.
- Endocardium is
the thin layer of tissue heart that lines the heart’s chambers
and valves. The cardiac conduction system is located in this layer of
the heart.
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