File:1112 Muscles of the Abdomen Anterolateral.png

English: Caption: (a) The anterior abdominal muscles include the medially located rectus abdominis, which is covered by a sheet of connective tissue called the rectus sheath. On the flanks of the body, medial to the rectus abdominis, the abdominal wall is composed of three layers. The external oblique muscles form the superficial layer, while the internal oblique muscles form the middle layer, and the transverses abdominus forms the deepest layer. (b) The muscles of the lower back move the lumbar spine but also assist in femur movements.

URL: https://cnx.org/contents/FPtK1zmh@8.108:b3YG6PIp@6/Axial-Muscles-of-the-Abdominal

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