1 — Left kidney; 2 — External oblique; 3 — Internal oblique; 4 — Transversus abdominis; Transverse abdominal; 5 — Peritoneum; 6 — Parietal abdominal fascia; Endoabdominal fascia; 7 — Quadratus lumborum; 8 — Thoracolumbar fascia, quadratus lumborum fascia; 9 — Psoas major; 10 — Transverse process; 11 — Lumbar vertebra; 12 — Erector spinae; 13 — Spinous process; 14 — Thoracolumbar fascia, posterior layer
