Last Updated
：2025/12/05
rectus abdominis
（ plural ）
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(anatomy) A paired muscle running vertically on each side of the anterior wall of the abdomen in humans and some other mammals.
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rectus abdominis
During the anatomy lab, the instructor pointed to the rectus abdominis and explained how it contracts during a sit-up.
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During the anatomy lab, the instructor pointed to the rectus abdominis and explained how it contracts during a sit-up.
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