From superficial to deep, order the transversus abdominis, external oblique and internal oblique muscles. Describe the orientation of the muscle fibers for each of these as well as for the rectus abdominis muscles

Question

What will be an ideal response

Answer 1

Fibers of the external oblique muscle run downward and medially (like outstretched fingers in pants pockets) and at right angles to those of the internal oblique that runs just deep to it. Under these is the transversus abdominis whose fibers run horizontally across the abdomen at an angle to both oblique muscles. The rectus abdominis muscles run medially from the pubis to the rib cage.