Your abdominal wall is made of several muscular layers that work together to support your spine, compress the viscera, and assist in breathing and movement. This 3D exploded view shows each major layer: ▪️ External oblique – the outermost muscle layer ▪️ Internal oblique – deeper, with fibers running opposite to the external oblique ▪️ Transversus abdominis – the deepest muscular layer, providing core stability ▪️ Rectus abdominis – the "six-pack" muscle at the front Together, these muscles form