. Surgery, its principles and practice . ^ to the perineal body. This, with the accompanying pelvicfascia, is what is torn more or less severely in lacerations of the femaleperineum at parturition, and which in surgical operation for removal ofthe rectum must be cut through before the rectum can be excised. When the finger is pressed in the cul-de-sac in front of the rectum inthe female pelvis, it is in contact with the posterior vaginal wall in front,for the space of the upper one-fifth of the vagina. Otherwise no viscusis touched. But m the male, pressure at the same point feels the trian-gu
. Surgery, its principles and practice . ^ to the perineal body. This, with the accompanying pelvicfascia, is what is torn more or less severely in lacerations of the femaleperineum at parturition, and which in surgical operation for removal ofthe rectum must be cut through before the rectum can be excised. When the finger is pressed in the cul-de-sac in front of the rectum inthe female pelvis, it is in contact with the posterior vaginal wall in front,for the space of the upper one-fifth of the vagina. Otherwise no viscusis touched. But m the male, pressure at the same point feels the trian-gular space at the base of the bladder and touches the prostate and sem-inal vesicles. The blood-supply of the rectum is of much practical arteries share in the supply. From above, the superior hemor-. FiG. 77.—a. Rectum shown through divided levatores ani; coccyx and lower sacrum cutaway. 6, Sagittal section of the pelvis. Rectum and external sphincter uncut; internal sphincterbeing within the rectal wall. Line shows normal peritoneal limits. rhoiclal, a single direct trunk, a branch of the inferior mesentericartery, runs in the loose tissue of the mesentery of the sigmoid, crosses theleft ureter and left common iliac vessels as it descends into the pelvis,and reaches the gut at the second sacral vertebra, where it divides mtotwo branches which descend on either side of the rectum. About fiveinches above the anus these divide into a half dozen branches, which soonpierce the muscular coat, running l^etween the mucous and muscularlayers of the gut, and at the lower end of the bow^el anastomose with thebranches of the middle and inferior hemorrhoidal arteries, forming a richvascular plexus. The middle hemorrhoidal arteries, somewhat irregularin origin, but most commonly from the ant
Size: 2178px × 1147px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, booksubjectg, booksubjectsurgery
