. The development of the human body : a manual of human embryology. Embryology; Embryo, Non-Mammalian. 3o8 THE LIVER almost be regarded as one, a median ventral lobe which embraces the ductus venosus (Fig. 188, B, DV), while the umbilical lobes are more lateral and dorsal and represent the right (rL) and left lobes of the adult liver. The remaining definite lobes, the caudate (Spigelian) and quadrate, are of later formation, standing in relation to the vessels which cross the lower surface of the liver. The ductus choledochus is at first wide and short, and near its proximal end gives rise to
. The development of the human body : a manual of human embryology. Embryology; Embryo, Non-Mammalian. 3o8 THE LIVER almost be regarded as one, a median ventral lobe which embraces the ductus venosus (Fig. 188, B, DV), while the umbilical lobes are more lateral and dorsal and represent the right (rL) and left lobes of the adult liver. The remaining definite lobes, the caudate (Spigelian) and quadrate, are of later formation, standing in relation to the vessels which cross the lower surface of the liver. The ductus choledochus is at first wide and short, and near its proximal end gives rise to a small outgrowth on each side, one of which becomes the ventral pancreas (Fig. 188, B, pm). Later the duct elongates and becomes more slender, and the gall-bladder is. Fig. 189.—Transverse Section through the Liver oe an Embryo of Four Months. in, Intestine; I, liver; W, Wolffian body.—{Toldt and Zuckerkandl.) constricted off from it, the connecting stalk becoming the cystic duct. The hepatic ducts are apparently developed from the liver substance and are relatively late in appearing. Shortly after the hepatic portion has been differentiated its sub- stance becomes permeated by numerous blood-vessels (sinusoids) and so divided into anastomosing trabeculae (Fig. 189). These are at first irregular in size and shape, but later they become more slender and more regularly cylindrical, forming what have been termed the. 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 original McMurrich, J. Playfair (James Playfair), 1859-1939. Philadelphia : P. Blakiston's son & co.
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Keywords: ., bookautho, bookcentury1900, bookdecade1910, booksubjectembryology
