Linea semilunaris

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Linea semilunaris
Gray392.png
The Obliquus externus abdominis. (Linea semilunaris labeled vertically at center, at border between brown and gray.)
Rectus abdominis.png
Linea semilunares are at lateral borders of rectus abdominis.
Gray'ssubject #118 417
 
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Linea semilunaris
Gray392.png
The Obliquus externus abdominis. (Linea semilunaris labeled vertically at center, at border between brown and gray.)
Rectus abdominis.png
Linea semilunares are at lateral borders of rectus abdominis.
Gray'ssubject #118 417

The linea semilunaris is a curved tendinous line placed one on either side of the rectus abdominis.

Each corresponds with the lateral border of the rectus abdominis, extends from the cartilage of the ninth rib to the pubic tubercle, and is formed by the aponeurosis of the internal oblique at its line of division to enclose the rectus, reinforced anteriorly by the external oblique and posteriorly by the transversus abdominis above the arcuate line (aka Linea semicircularis)

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