. Cunningham's Text-book of anatomy. Anatomy. 484 THE MUSCULAE SYSTEM. The spermatic funiculus passes over the base of the triangle, covered over by the aponeurosis of the obliquus externus. Behind the funiculus, and forming the floor of the triangle, is the fascia transversalis partially covered in the medial portion of the triangle by the falx inguinalis of the obliquus internus and transversa muscles. Middle arcuate ligament Vena caval opening (Esophageal opening in diaphragm Aortic openin Anterior ramus of twelfth thoracic nerve Quadra tus lumborum Ilio-hypogastric nerve Ilio-inguinal nerv
. Cunningham's Text-book of anatomy. Anatomy. 484 THE MUSCULAE SYSTEM. The spermatic funiculus passes over the base of the triangle, covered over by the aponeurosis of the obliquus externus. Behind the funiculus, and forming the floor of the triangle, is the fascia transversalis partially covered in the medial portion of the triangle by the falx inguinalis of the obliquus internus and transversa muscles. Middle arcuate ligament Vena caval opening (Esophageal opening in diaphragm Aortic openin Anterior ramus of twelfth thoracic nerve Quadra tus lumborum Ilio-hypogastric nerve Ilio-inguinal nerve Lateral cutaneous nerve of thigh Femoral nerve / Genito-femoral A . nerve -U— Obturator nerv.; ... M Anterior ramus i of fourth lumbar ferSS nerve Anterior ramus of fifth lumbar '""" / 7%^, nerve. ( Medial and -! lateral lumbo- costal arches Ant. ramus of twelfth thoracic nerve Quadratus lumborum Ilio-hypogastric s;vjS \ || nerve — Ilio-inguinal nerve Psoas major Genito-femoral nerve Lateral cutaneous nerve of thigh Lumbo-sacral trunk Femoral nerve Obturator nerve Fig. 430.—The Diaphragm and Posterior Abdominal Wall. Inguinal Hernia.—For an account of the anatomical relations of the inguinal canal to the various forms of inguinal hernia, see the section on " Applied ; Nerve-Supply.—The nerve-supply of the majority of the foregoing muscles is derived from the anterior rami of the lower six thoracic nerves. The pyramidalis muscle is innervated by the last thoracic nerve. The cremaster muscle receives its supply from the genito-femoral nerve (L. 1. 2.). Actions.—(1) The chief action of these muscles is to retract the abdominal walls. -By compressing the contents of the abdomen, they are powerful agents in vomiting, defsecation,. 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 orig
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectanatomy, bookyear1914
