. Human embryology and morphology. Embryology, Human; Morphology. CHAPTER XVIII. THE ORGANS OF DIGESTION. Development of the Liver.—The human liver, in its develop- ment, repeats the forms met with in ascending the animal scale. In Amphioxus the liver is merely a caecal diverticulum of the digestive canal; in amphibians the liver is a compound tubular gland—the hepatic cells being arranged in cylinders round the bile ducts. In birds and mammals the tubular arrangement is lost and the lobular form substituted. 7st aortic arch dorsal aorta I transuerse sinus left duct of Cuuier tpusi. menu-/ \ca
. Human embryology and morphology. Embryology, Human; Morphology. CHAPTER XVIII. THE ORGANS OF DIGESTION. Development of the Liver.—The human liver, in its develop- ment, repeats the forms met with in ascending the animal scale. In Amphioxus the liver is merely a caecal diverticulum of the digestive canal; in amphibians the liver is a compound tubular gland—the hepatic cells being arranged in cylinders round the bile ducts. In birds and mammals the tubular arrangement is lost and the lobular form substituted. 7st aortic arch dorsal aorta I transuerse sinus left duct of Cuuier tpusi. menu-/ \cardium /Jung bud in mesentery dorsal mesogast. torn. art con. arter. pericard.' sinus uenosus. amnion w ^^—uitelline uein liuer bud ^'yolk sac. •ventral mesentery septum transu. Fig. 212.—The Mesentery of the Fore-gut and its Contents, -viewed from the left side (schematic). To understand the development of the liver, the condition of parts at the commencement of the third week must be 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 Keith, Arthur, Sir, 1866-1955. London : E. Arnold
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectembryol, bookyear1902
