Human anatomy, including structure and development and practical considerations . lowed by the long and complicated tube of the small intestine,divided into the duodenum and t\\e Jej^ino-lleum. According to Treves, the averagelength in the male is m. (22 ft. 6 in.) and in the female nearly 15 cm. (6 in.)more. This excess, however, would probably not be confirmed by a larger the male the extremes were m. (31 ft. 10 in.) and m. (15 ft. 6 in.), inthe female m. (29 ft. 4 in.) and m. (18 ft. 10 in.). The outer wall of thetube is regular, without sharp folds or sacculat
Human anatomy, including structure and development and practical considerations . lowed by the long and complicated tube of the small intestine,divided into the duodenum and t\\e Jej^ino-lleum. According to Treves, the averagelength in the male is m. (22 ft. 6 in.) and in the female nearly 15 cm. (6 in.)more. This excess, however, would probably not be confirmed by a larger the male the extremes were m. (31 ft. 10 in.) and m. (15 ft. 6 in.), inthe female m. (29 ft. 4 in.) and m. (18 ft. 10 in.). The outer wall of thetube is regular, without sharp folds or sacculations, beyond the duodenum. The 103 1^34 HUMAN ANAT( )MV circumference is j^reatest in the duodenum (not always at the same point), beyondivhich it gradually decreases, the diameter of the gut at its lower end being nearlyone-third smaller \han at the beginning. Since certain structural features are com-mon to the entire small intestine, it will be convenient to consider these in this place,further details being given with the descriptions of the special parts. Fig. 1383. Liver. Trans\erse coloi Iciform ligament Stomach Ileum Greater omentum (cutsurface; Coils of jejunum Descending colon Sigmoid flexure Abdominal organs of formalin subject. Stomach v»-as unusually large, giving an exaggerated impression of its transverse position. Structure.—The small- intestine, as other parts of the alimentary tube belowthe diaphragm, consists of four coats, the viucous, the subinucoiis, the muscular, and the serous. The mucous coat, in addition to the glandular structures, possesses folds and villi that not onlv greatlv increase its surface, but also contribute peculiarities which aid in differentiating between tvpical portions taken from various regions. The THK SMALL LNTLSTIXK. i^\^5 epitluiium covering the free surface consists of a single layer of cylindrical cells whichexhibit a striated cuticular border next the intestinal lumen. This border lacksstability, and is resoK-able into min
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Keywords: ., bookauthormc, bookcentury1900, bookdecade1910, booksubjectanatomy
