The practice of surgery . Fig. 4.—Diagram showing unusually long appendix. an organ of considerable size.* At the fourth month of intra-uterinelife the size of the appendix is to the cecum as about 1 is to 5. At birthit approximates to the adult size and foi-m, its proportion to the cecum 1 In herbivora no true appendix is found, but a large, useful, and dilatablesecond cecal pouch. In carnivora this pouch has shrunk to the apparently uselessappendix or has disappeared. APPENDICITIS 19 bein- about 1 to 15. As infancy and youth advance, this disproportionbecomes more and more marked, until the
The practice of surgery . Fig. 4.—Diagram showing unusually long appendix. an organ of considerable size.* At the fourth month of intra-uterinelife the size of the appendix is to the cecum as about 1 is to 5. At birthit approximates to the adult size and foi-m, its proportion to the cecum 1 In herbivora no true appendix is found, but a large, useful, and dilatablesecond cecal pouch. In carnivora this pouch has shrunk to the apparently uselessappendix or has disappeared. APPENDICITIS 19 bein- about 1 to 15. As infancy and youth advance, this disproportionbecomes more and more marked, until the cecum has overgrown andcrowded the appendix to such an extent that the latter has been pushedupward, backward, and usually inward, so as to appear as a mere spiral. Ficr 5 —Normal position of appendix and cecum with transverse colon raised;^ dotted line showing natural position of transverse colon. projection from the posterior aspect of the cecum. This position itreaches about the fifth year. Commonly, one finds the appendixswinging loosely in a fold of peritoneum, which forms its mesentery,—the meso-appendix,—and carries its blood-supply, nerves, and lymph-vessels. 20 THE ABDOMEN The artery of the appendix springs from the superior mesenteric,and feeds the organ through a number of branches. The nerve distribu-tion is shared with the small intestine and the stomach; the muacularmechanism runs to the The significance of this divergentarrangement will be seen when we consider the etiology of the wall of the appendix resembles that of the cecum, its mucousmembrane is far richer in lymph-glands, which are intimately concernedwath its inflammatory processes. The organ practically is alwaysCO vexed with peritoneum, bu
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectsurgery, bookyear1910
