Muscle of the anterolateral abdominal wall 1-EXternal oblique 2-Internal oblique 4-Transversus abdominis 3-Rectus abdominis The direction of muscular fiber Anterolateral abdominal wall-H sectionCopy Right- Hongqi ZHANG-Department of Anatomy-Fudan University Copy Right- Hongqi ZHANG-Department of Anatomy-Fudan University Muscle of the Anterolateral abdominal wall 1-External oblique 2-Internal oblique 3-Rectus abdominis 4-Transversus abdominis The direction of muscular fiber 1 Anterolateral abdominal wall-H section 2 3 1 2 3 4 3 1 2 4