. Surgery, its principles and practice . Fig. 404.—Showing Relation of Appendix toIleocecal Valve. 732 SURGERY OF THE APPENDIX VERMIFORMIS. artery run in the subserous coat, and supply both walls in the samemanner as the branches of the superior mesenteric do the small when the mesoappendix does not extend along the whole lengthof the appendix, the terminal portion has a poor blood-supply. More-over, as in the small intestine, that part of the appendix nearest themesentery is better provided with blood than is the opposite base of the appendix is supplied, in addition,
. Surgery, its principles and practice . Fig. 404.—Showing Relation of Appendix toIleocecal Valve. 732 SURGERY OF THE APPENDIX VERMIFORMIS. artery run in the subserous coat, and supply both walls in the samemanner as the branches of the superior mesenteric do the small when the mesoappendix does not extend along the whole lengthof the appendix, the terminal portion has a poor blood-supply. More-over, as in the small intestine, that part of the appendix nearest themesentery is better provided with blood than is the opposite base of the appendix is supplied, in addition, with blood from twigsof the cecal branch of the posterior cecal artery. This is the only sourceof blood-supply to the appendix in the fetus before the mesoappendixforms. Veins.—The veins accompany the arteries. They are very thin-walled. Fig. 405.—Showing the Arrangement op the Arteries and Lymphatics of the VermiformAppendix and Ileocecal Region. and are among the most dependent branches of the portal system (thehemorrhoidal and sigmoid alone being lower). It will be noticed thatthe blood-supply of the appendix is very precarious and readily liableto interruption. Lymphatics.—These accompany the blood-vessels and empty intoa lymph-node which is rather constant at the ileocecal angle. It isoccasionally found some distance away in the lower portion of the mesen-tery, and is then not distinguishable from other mesenteric glands, ofwhich it is, in this event, the lowest. Nerves.—The appendix has a rather abundant nerve-supply fromthe superior mesenteric plexus of the sympathetic system. TYPHLITIS, PERITYPHLITIS, EPITYPHLITIS. 733 Structure.—The appendix has been compared to a Peyers patchthrust out from the bowel Hke the finger of a glove, and so comprisingall the coats of the large intestine. The serosa or perit
Size: 1710px × 1462px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, booksubjectg, booksubjectsurgery
