Which surface is on the side above the diaphragmatic surface?

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Multiple Choice

Which surface is on the side above the diaphragmatic surface?

Explanation:
The diaphragmatic surface is the inferior aspect of the heart, resting on the diaphragm. The lateral (pulmonary) surfaces are the side-facing surfaces, formed by the right and left ventricles (and atrium to some extent) that contact the lungs. Because these side surfaces extend upward from the inferior plane, they sit on the side above the diaphragmatic surface. The anterior surface faces the sternum, and the posterior surface faces the vertebral column, but they are not the sides’ position relative to the diaphragmatic surface. So the lateral surface is the correct choice.

The diaphragmatic surface is the inferior aspect of the heart, resting on the diaphragm. The lateral (pulmonary) surfaces are the side-facing surfaces, formed by the right and left ventricles (and atrium to some extent) that contact the lungs. Because these side surfaces extend upward from the inferior plane, they sit on the side above the diaphragmatic surface. The anterior surface faces the sternum, and the posterior surface faces the vertebral column, but they are not the sides’ position relative to the diaphragmatic surface. So the lateral surface is the correct choice.

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