Identifier: b20386424 (find matches)
Title: Anatomy, descriptive and surgical (electronic resource)
Year: 1860 (1860s)
Authors: Gray, Henry, 1825-1861 Carter, H. V., ill Westmacott, John Guise, Dr, ill
Subjects: Anatomy
Publisher: London : J.W. Parker
Contributing Library: Wellcome Library
Digitizing Sponsor: Wellcome Library

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est of the os pubis andpectineal line, forming what was before mentioned as the conjoined tendon of thesemuscles. Throughout the rest of its extent the fibres pass horizontally inwards,and near the outer margin of the Rectus, terminate in an aponeurosis, Avhich isinserted into the linea alba; its upper three-fourths passing behind the Rectusmuscle, blending with the posterior lamella of the Internal oblique; its lowerfourth passing in front of the Rectus. Relations. By its external surface, with the Internal oblique, the inner surface OF THE ABDOMEN. 253 of the lower ribs, and Internal intercostal muscles. Its iimer surface is lined bythe fascia transversalis, which separates it from the peritoneum. Its lower borderforms the upper boundary of the spermatic canal. Lumbar Fascia (fig. 166). The vertebral aponeurosis of the Transversalis dividesinto three layers, an anterior, very thin, which is attached to the front part of the 165.—The Transversalis, Kectus, and Pyramiclalis Muscles.
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apices of the transverse processes of the lumbar vertebrae, and, above, to the lowermargin of the last rib, forming the ligamentum arcuatum externum ; a middlelayer, much stronger, which is attached to the apices of the transverse processes;and a posterior layer, attached to the apices of the spinous processes. Betweenthe anterior and middle layers is situated the Quadratus lumborum, between themiddle and posterior, the Erector spinse. The posterior lamella of this aponeurosisreceives the attachment of the Internal oblique; it is also blended with the apo-neurosis of the Serratus posticus inferior and with that of the Latissimus dorsi,forming the lumbar fascia. 254 MUSCLES AND FASCIA. Dissection. To expose the Rectus muscle, its sheath should be opened by a verticalincision extending from the margin of the thorax to the pubes, the two portions shouldthen be reflected from the surface of the muscle, which is easily effected, excepting at thelinese transversse, where so close an adhesio

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