• pelvic
  • The Ureter, in front of the internal iliac vessels lies well anterior to the upper part of the plexus and, In front of all are the parietal pelvic peritoneum and pelvic viscera - the sigmoid colon on the left and terminal iliac coils on the right side. (studyres.com)
  • The obturator nerve leaves the lumbar plexus and descends behind psoas major on it medial side, then follows the linea terminalis into the lesser pelvis, and finally leaves the pelvic area through the obturator canal. (wikipedia.org)
  • lateral
  • They are: Common Peroneal part of the Sciatic nerve - L4,5,S1,2, Superior Gluteal Nerve - L4,5,S1 Inferior Gluteal Nerve - L5,S1, Relations: This broad triangular plexus forms lateral to the anterior sacral foramina. (studyres.com)