. Human embryology and morphology. Embryology, Human; Morphology. 108 HUMAN EMBRYOLOGY AND MORPHOLOGY. they become functionless' and only of pathological importance Their presence in the female is due to their being inherited from the male. THE KIDNEY. Origin of the Permanent Kidney.—In Fishes and Amphibians the Wolffian body alone acts as a kidney. In Reptiles, Birds and Mammals, the permanent or hind kidney appears and supplants the Wolffian kidney. The kidney appears in the human embryo at the beginning of the second month. It arises Wolffian duct. allantois genital, tub. genital g
. Human embryology and morphology. Embryology, Human; Morphology. 108 HUMAN EMBRYOLOGY AND MORPHOLOGY. they become functionless' and only of pathological importance Their presence in the female is due to their being inherited from the male. THE KIDNEY. Origin of the Permanent Kidney.—In Fishes and Amphibians the Wolffian body alone acts as a kidney. In Reptiles, Birds and Mammals, the permanent or hind kidney appears and supplants the Wolffian kidney. The kidney appears in the human embryo at the beginning of the second month. It arises Wolffian duct. allantois genital, tub. genital gl. renal mesoblast renal bud rectum cloacal membs cauda- Fig. S3.—The Origin of the Renal Bud (diagrammatic). (see Fig. 83) as a bud from the dorsal side of the Wolffian duct near the termination of that duct in the cloaca. At first it is i stalked bud with a narrow lumen ; it rapidly extends forwards t( the lumbar region behind the Wolffian body and behind th< peritoneum. The stalk of the bud forms the ureter. Th< connection of the stalk with the Wolffian duct is lost; the ter mination of the ureter migrates along the duct until it reachei that part of the cloaca which afterwards forms the bladder (Fig 84). The dilated cephalic end of the bud divides into severa secondary buds. The dilated terminal part forms tb pelvis of the kidney, its infundibula and calyces. The tubule. 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
Size: 1341px × 1864px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, booksubjectembryol, bookyear1902
