. Archives of physical medicine and rehabilitation . ndicularportion of tlie cecum, which has anarrower lumen and thicker walls—theappendix. The same three divisions exist in thehuman cecum, excepting that, whereasin the rat there i? an additional sph nc-teric ring between the cecal colon andthe cecum, may be called theintercecal sphincter, in the human beingthis sphincter is represented by a vestig-ial strip of muscular fibers, the retinac-ulum (Fig. 4), which extends acrossthe cecum, posterior to the lateral as-pect of the gut and wth which the twofolds and below the ileocecalo
. Archives of physical medicine and rehabilitation . ndicularportion of tlie cecum, which has anarrower lumen and thicker walls—theappendix. The same three divisions exist in thehuman cecum, excepting that, whereasin the rat there i? an additional sph nc-teric ring between the cecal colon andthe cecum, may be called theintercecal sphincter, in the human beingthis sphincter is represented by a vestig-ial strip of muscular fibers, the retinac-ulum (Fig. 4), which extends acrossthe cecum, posterior to the lateral as-pect of the gut and wth which the twofolds and below the ileocecalopening merge. The cecal colon is con-sidered to be that portion of the largeintestine into which the ileum birds, such as the ostrich, thececal colon acts as a distributing cham-ber, the fluid part of the content beingpressed through a sphinctered singleopening in this atrium into the ceca(two long saccules), while the solidportions pass into the colon through long, contracted area, thececocolic sphincteric tract. The true. Fig. I Fig-. 1—Ileocecal reffion of 2—Ileocecal region of veg-etable-feeding- birds. In theg^ronse the ceca together are twice the length of the smallbowel. Fig, 3—Ileocecal region of horse,rig. 4—Ileocecal region of human. The upper and lowerfolds, which meet at the ileocecal opening, forming therstinacula,, are indicated. Fig. 4 CC—cecal —sphincteric ——ileum. CO—intercecal —Ileocecal —appendix. 413
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Keywords: ., bookauthoramerican, bookcentury1900, bookdecade1920, bookyear1920
