Rectus Abdominis

Joe Muscolino

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  • The rectus abdominis attaches from the crest and symphysis of the pubic bone to the xiphoid process of the sternum and the costal cartilages of ribs 5 through 7.



  • The rectus abdominis flexes and laterally flexes the trunk at the spinal joints.
  • It posteriorly tilts the pelvis at the lumbosacral joint.
  • The rectus abdominis also compresses the abdominal contents.