Arcuate line (anterior abdominal wall)
From Wikipedia, the free encyclopedia
- For other arcuate lines, see arcuate line.
| Arcuate line (anterior abdominal wall) | |
|---|---|
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| The interfoveolar ligament, seen from in front. (Linea semicircularis labeled at center top.) | |
| Latin | linea arcuata vaginae musculi recti abdominis |
| Gray's | subject #118 416 |
| Dorlands/Elsevier | l_10/12496056 |
The arcuate line of the abdomen (or linea semicircularis) is a horizontal line that demarcates the lower limit of the rectus sheath.
Superior to the arcuate line, the internal oblique aponeurosis splits to envelope the rectus abdominis muscle. Inferior to the arcuate line, the internal oblique and transversus abdominis aponeuroses merge and pass superficial to the rectus muscle.
Therefore, inferior to the arcuate line, the rectus abdominis rests directly on the transversalis fascia.
If one dissects the anterolateral abdominal wall, the arcuate line may be seen, since all the aponeuroses are translucent.
[edit] External links
- SUNY Labs 35:13-0101 - "Anterior Abdominal Wall: The Posterior Wall of the Rectus Sheath"
- SUNY Anatomy Image 7113
- SUNY Anatomy Image 7573
- GPnotebook 1751842873
- Norman/Georgetown rectussheath
- Rizk N. "The arcuate line of the rectus sheath--does it exist?". J Anat 175: 1-6. PMID 1828798.
- Atlas of anatomy at UMich abdo_wall61 - "Anterior Abdominal Wall, Lower Part, Posterior View"
