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Anatomical Definition: Heart
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Heart has four chambers: The atria are receiving areas that
pump blood into discharging chambers called the ventricles
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Heart and the roots of the great vessels lie in the pericardium,
which is located in the middle mediastinum.
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Heart has a base (posterior aspect), apex (inferolateral end),
three surfaces (sternocostal, diaphragmatic and pulmonary)
and four borders (right, inferior, left and superior)