. Human embryology and morphology. Embryology, Human; Morphology. THE ORGANS OF DIGESTION". 265 (man, anthropoids) differs widely in form and lobulation from that of mammals generally, but Professor Arthur Thomson has shown that traces of the fissures and lobes of the typical mam- malian liver can be seen in the human organ. The liver of a dog or dog-like ape consists of three main lobes—right, middle and left, and two accessory lobes-—the caudate and Spigelian (Fig. 214). In man the right and middle lobes have fused, but traces of the fissure which separates them (the right lateral fissu
. Human embryology and morphology. Embryology, Human; Morphology. THE ORGANS OF DIGESTION". 265 (man, anthropoids) differs widely in form and lobulation from that of mammals generally, but Professor Arthur Thomson has shown that traces of the fissures and lobes of the typical mam- malian liver can be seen in the human organ. The liver of a dog or dog-like ape consists of three main lobes—right, middle and left, and two accessory lobes-—the caudate and Spigelian (Fig. 214). In man the right and middle lobes have fused, but traces of the fissure which separates them (the right lateral fissure) are frequently to be seen in the liver of the newly-born child (Fig. 215). The caudate lobe has been reduced in man to a vestige, but in the third month foetus it is of considerable size (Fig. 215). It projects from the liver at the upper boundary of the foramen of Winslow; in many animals it rivals the right lobe in size. The caudate fissure separates the caudate from the right lobe, and a trace of this fissure is very frequently to be seen in the human liver (Fig. 215). Spigelian eaud_ ,obe. left iat. lobe lig. tere. caud. fls. right Iat lobe -right Iat. fissure gl. bladder middle lobe Fig 215 —The lower surface of the Liver of a human foetus during the 3rd month, showing Vestiges of Fissures and Lobes of the typical mammalian Liver. After the second month the growth of the right lobe is more rapid than that of the left. At birth the left lobe still touches the spleen, a relationship more frequently retained in women than in men. Eiedel's lobe is a linguiform prolongation of the right lobe below the 10th right costal cartilage caused by compression. Gall Bladder.—It is developed from the common stalk (common bile duct) as a diverticulum in the second month ( Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the
Size: 1629px × 1535px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, booksubjectembryol, bookyear1902
