. Anatomy, descriptive and surgical. y areolar 1 Mr. Treves states that, after a careful examination of 100 subjects, he found that in 52 there wasneither an ascending nor a descending mesocolon. In 22 there was a descending mesocolon, but notrace of a corresponding fold on the other side. In 14 subjects there was a mesocolon to both theascending and the descending segments of the bowel; while in the remaining 12 there was anascending mesocolon, but no corresponding fold on the left side. It follows, therefore, that in per-forming lumbar colotomy a mesocolon may be expected upon the left side
. Anatomy, descriptive and surgical. y areolar 1 Mr. Treves states that, after a careful examination of 100 subjects, he found that in 52 there wasneither an ascending nor a descending mesocolon. In 22 there was a descending mesocolon, but notrace of a corresponding fold on the other side. In 14 subjects there was a mesocolon to both theascending and the descending segments of the bowel; while in the remaining 12 there was anascending mesocolon, but no corresponding fold on the left side. It follows, therefore, that in per-forming lumbar colotomy a mesocolon may be expected upon the left side in 36 per cent, of all cases,and on the right in 26 per cent. (The Anatomy of the Intestinal Canal and Peritoneum in Man, 1885,p. 55). 884 ORGANS OF DIGESTION. tissue with the left eras of the Diaphragm, the left kidney, and the Quadratus lum-borum (Figs. 586, 587). It is smaller in calibre and more deeply placed than theascending colon, and is more frequently covered with peritoneum on its posterior Fig. 5S6. POSTERIORLUMBAR FASCI/. Diagram of the Relations of the Large Intestine and Kidney, from behind. , surface than the ascending colon (Treves). [It is very important to locate thecolon accurately from the exterior in operations upon it. It lies half an inchbehind the mid-point between the anterior and superior spines of the ilium.] THE LARGE INTESTINE. 885 The sigmoid flexure is the narrowest part of the colon; it is situated in theleft iliac fossa, commencing from the termination of the descending colon at the Fig. 587. RECEPTACULUM
Size: 1313px × 1902px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., boo, bookcentury1800, booksubjectanatomy, booksubjecthumananatomy
