. Common diseases of farm animals. Veterinary medicine. DISEASES OF THE GENERATIVE ORGANS 83 oped by several layers of membranes. The external envelope, the chorion, is exactly adapted to the lltel1^s. The innermost enve- lope, the amnion, encloses the fietns. Coverinii' the external face of the amnion and lining the inner face of the chorion is a donble membrane, the allantois. The envelopes mentioned are not the only protection that the fd'tns has against injury. It is enveloped in fluids as well. Immediately surrounding it is. Fig. 19.—Placenta of cow. the liquor amnii, and within the allan
. Common diseases of farm animals. Veterinary medicine. DISEASES OF THE GENERATIVE ORGANS 83 oped by several layers of membranes. The external envelope, the chorion, is exactly adapted to the lltel1^s. The innermost enve- lope, the amnion, encloses the fietns. Coverinii' the external face of the amnion and lining the inner face of the chorion is a donble membrane, the allantois. The envelopes mentioned are not the only protection that the fd'tns has against injury. It is enveloped in fluids as well. Immediately surrounding it is. Fig. 19.—Placenta of cow. the liquor amnii, and within the allantois is the allantoic fluid. The placenta is a highly vascular structure spread out or scattered over the surface of the chorion and the mucous mem- brane of the uterus, that attaches the fcetus and its envelopes to the womb (Fig. 19). It is by means of this vascular apparatus that the fretus is furnished with nourishment. The fetal and maternal placentas are made up of vascular villi and depres- sions that are separated only by the thin walls of capillaries,. 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 Craig, Robert Alexander, 1872-. Philadelphia London, J. B. Lippincott company
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Keywords: ., bookpublisherphilad, booksubjectveterinarymedicine, bookyear1919
