Sheath of rectus abdominis Concept It is a strong incomplete fibrous compartment of the rectus abdominis Two part Anterior layer Posterior layer Anterior layer Ant layer of the sheath Formed by fusion of aponeurosis of obliquus externus abdominis and ant leaf of aponeurosis of obliquus internus Sheath of rectus abdominis Post layer of the sheath abdominisSheath of rectus abdominis Anterior layer Formed by fusion of aponeurosis of obliquus externus abdominis and ant. leaf of aponeurosis of obliquus internus abdominis Ant. layer of the sheath Post layer of the sheath Sheath of rectus abdominis Concept It is a strong incomplete fibrous compartment of the rectus abdominis. Two part Anterior layer Posterior layer