. The development of the chick : an introduction to embryology. Embryology; Chickens -- Embryos. THE URINOGENITAL SYSTEM 403 gland at this time, but docs not open into the cloaca. Indeed, the opening is not established until after the hen is six months old (Gasser.). Fig. 231. — Photograph of a cross-section of an embryo of 8 days through the ostia tubse abdominaha. a. A. S., Neck of abdominal air-sac. O. T. a., Ostium tubse abdominale. M's', Accessory mesentery, pi. C. r., 1., Right and left pleural cavities. Rec. pn. ent. r., Right pneumato-enteric recess. V. c. a. 1., Left anterior vena
. The development of the chick : an introduction to embryology. Embryology; Chickens -- Embryos. THE URINOGENITAL SYSTEM 403 gland at this time, but docs not open into the cloaca. Indeed, the opening is not established until after the hen is six months old (Gasser.). Fig. 231. — Photograph of a cross-section of an embryo of 8 days through the ostia tubse abdominaha. a. A. S., Neck of abdominal air-sac. O. T. a., Ostium tubse abdominale. M's', Accessory mesentery, pi. C. r., 1., Right and left pleural cavities. Rec. pn. ent. r., Right pneumato-enteric recess. V. c. a. 1., Left anterior vena cava. R., rib. Other abbreviations as before. IV. The Suprarenal Capsules The suprarenals of the hen are situated medial to the anterior lobe of the kidney, in the neighborhood of the gonad and vena cava inferior. They have a length of about 8-10 mm. The substance consists of two kinds of cords of cells, known respec- tively as cortical and medullary cords, irregularly intermingled: the so-called cortical cords make up the bulk of the substance, and the medullary cords occur in the meshes of the cortical 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 Lillie, Frank Rattray, 1870-1947. New York : Henry Holt
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Keywords: ., bookauthorlilliefrankrat, bookcentury1900, booksubjectembryology
