Right border of heart
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| Right border of heart | |
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| Sternocostal surface of heart. (Right margin visible but not labeled.) | |
| Latin | margo dexter cordis |
| Gray's | subject #138 528 |
| Dorlands/Elsevier | m_04/12514410 |
The right margin of the heart (right border of heart) is long, and is formed by the right atrium above and the right ventricle below.
- The atrial portion is rounded and almost vertical; it is situated behind the third, fourth, and fifth right costal cartilages about 1.25 cm. from the margin of the sternum.
- The ventricular portion, thin and sharp, is named the acute margin; it is nearly horizontal, and extends from the sternal end of the sixth right coastal cartilage to the apex of the heart.
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