you are presented with three stab wounds to the abdomen. one is directly in the midline, one 2cm lateral to the midline, one lateral to the mid-clavicular line. what abdominal wall structures are penetrated in each case?
midline- linea alba
just off the midline- rectus sheath, rectus abdominis muscle
past mid-clavicular line- external abdominal oblique, internal abdominal oblique, transversus abdominis