page_title: Right border of heart
hierarchical_section_title: Right border of heart
caption_attribution_description: English: coronary sulcus or human heart skeleton&#160;
context_page_description: The right border of the heart is a long border on the surface of the heart, and is formed by the right atrium.
  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.
context_section_description: The right border of the heart (right margin of heart) is a long border on the surface of the heart, and is formed by the right atrium.
  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.
caption: Sternocostal surface of heart. (Right margin visible but not labeled.)
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