In dictionaries:
Arcuate line of rectus sheath
The arcuate line of rectus sheath (the arcuate line or the semicircular line of Douglas) is a line of demarcation corresponding to the free inferior margin of the posterior layer of the rectus sheath inferior to which only the anterior layer of the rectus sheath is present and the rectus abdominis muscle is therefore in direct contact with the transversalis fascia.
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