Left border of heart

From Wikipedia, the free encyclopedia
  (Redirected from Left margin of heart)
Jump to navigation Jump to search
Left border of heart
Sternocostal surface of heart.
Heart seen from above.
LatinMargo obtusus
Anatomical terminology

The left border of heart (or left margin, or obtuse margin) is shorter than the right border, full, and rounded: it is formed mainly by the left ventricle, but to a slight extent, above, by the left atrium.

It extends from a point in the second left intercostal space, about 2.5 mm. from the sternal margin, obliquely downward, with a convexity to the left, to the apex of the heart.


This article incorporates text in the public domain from page 528 of the 20th edition of Gray's Anatomy (1918)

External links[edit]