. Cunningham's Text-book of anatomy. Anatomy. LUMBAE PLEXUS. 721 above the inguinal ligament, it becomes superficial after passing through the subcutaneous inguinal ring and external spermatic fascia (Fig. 623, p. 715). Its branches are muscular to the muscles of the abdominal wall, among which it passes, and cutaneous branches (anterior scrotal, or labial nerves), which innervate Median Lumbocostal arch Vena caval opening Oesophageal opening in diaphragm Aortic opening Anterior ramus of twelfth thoracic nerve Quadratus lumborum Ilio-hypogastric nerve Ilio-inguinal nerve Lateral cutaneous nerv
. Cunningham's Text-book of anatomy. Anatomy. LUMBAE PLEXUS. 721 above the inguinal ligament, it becomes superficial after passing through the subcutaneous inguinal ring and external spermatic fascia (Fig. 623, p. 715). Its branches are muscular to the muscles of the abdominal wall, among which it passes, and cutaneous branches (anterior scrotal, or labial nerves), which innervate Median Lumbocostal arch Vena caval opening Oesophageal opening in diaphragm Aortic opening Anterior ramus of twelfth thoracic nerve Quadratus lumborum Ilio-hypogastric nerve Ilio-inguinal nerve Lateral cutaneous nerve of thigh Femoral nerve Lumbo-inguinal A' nerve -/--- Obturator nerve h. Descending ] rami's of fourth lumbar nerve Anterior ramus of fifth lumbar nerve. f Medial and -j lateral lumbo- costal arches Ant. ramus of twelfth thoracic nerve Quadratus lumborum Ilio-hypogastric nerve Ilio-inguinal nerve Psoas major Genito-femoral Lateral cutaneous nerve of thigh Iliacns Lumbo-sacral trunk Femoral nerve Obturator nerve Fig. 625.—The Muscles and Nerves on the Posterior Abdominal Wall. the skin (1) of the anterior abdominal wall over the symphysis pubis, (2) of the thigh over the superior and medial part of the femoral triangle, and (3) of the superior part of the scrotum, and root and dorsum of the penis (of the mons Veneris and labium majus in the female). These last-named branches are contiguous to branches of the perineal and pudendal nerves. No lateral cutaneous branch arises from the ilio-inguinal nerve. It thus corresponds, like the anterior cutaneous part of the ilio-hypogastric nerve, to the anterior trunk of a typical thoracic nerve. 47. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Cunningham, D. J. (Daniel John), 1850-1909; Robinson, Arthur, b. 1862, ed. New York, W. Wood
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