Practical observations on some of the diseases of the rectum, anus, and contiguous textures : giving their nature, seat, causes, symptoms, consequences, and prevention, especially addressed to the non-medical reader . lon.(Vide Plate I.) It commences at the termination of the sig-moid flexure (double curve) of the colon, opposite to the leftsacro-vertebral articulation, and it terminates at the anus. It isabout twelve inches long, varying slightly, however, in dif-ferent subjects, according to their stature. Its form is cylin-drical at its commencement, and, indeed throughout a con-siderable p
Practical observations on some of the diseases of the rectum, anus, and contiguous textures : giving their nature, seat, causes, symptoms, consequences, and prevention, especially addressed to the non-medical reader . lon.(Vide Plate I.) It commences at the termination of the sig-moid flexure (double curve) of the colon, opposite to the leftsacro-vertebral articulation, and it terminates at the anus. It isabout twelve inches long, varying slightly, however, in dif-ferent subjects, according to their stature. Its form is cylin-drical at its commencement, and, indeed throughout a con-siderable portion of its extent; but towards its lower extrem-ity, however, it becomes large and saccated, forming a ter-minal pouch, which is dilated and flattened from before back-ward, and the mouth of which is closed by the internalsphincter ani muscle, like a purse. This dilatation or pouch, * The term rectum, which signifies straight, when applied to the terminal portionof the intestinal tube in the human subject, is neither correct nor at all appropri-ate ; for it will presently be demonstrated that it is not straight, but curved, both inthe antero-posterior and lateral direction. PLATE 1 Stomach ami lutes lines i. EXPLANATION . a The ( Small Jutes trues . Colon or Great As cending Coloii. Transrerse Descending Colon, Pouch of the S-plrmcter Am Anus ANATOMY OF THE RECTUM AND ANUS. 29 in consequence of the peculiar organization of the part, iscapable of acquiring great size, and in some instances, oflong continued retention pf faeces, it has been found to occupya very large portion of the cavity of the pelvis. The size of the rectum for some distance, is nearly con-tinuous with that of the sigmoid flexure of the colon; butdiffers from the other portions of the intestines by itsbecoming wider in its downward progress, until it reachesthe upper margin of the internal sphincter ani
Size: 1161px × 2151px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1850, booksub, booksubjectanusdiseases
