Right border of heart

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Template:Infobox Anatomy Template:Search infobox Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]


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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