Left border of heart
(Redirected from
Left margin of heart
)| Left border of heart | |
|---|---|
 Sternocostal surface of heart. | |
 Heart seen from above. | |
| Details | |
| Identifiers | |
| Latin | Margo obtusus |
| Anatomical terminology | |
The left border of heart (or obtuse margin) is formed from the rounded lateral wall of the
left circumflex artery
.
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 is contrasted with the acute margin of the heart, which is at the border of the anterior and posterior surface, and in which the acute marginal branch of the right coronary artery is found. The angle formed here is <90 degrees, therefore an acute angle.
References
This article incorporates text in the public domain from page 528 of the 20th edition of Gray's Anatomy (1918)
External links
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