. The principles and practice of judging live-stock . Livestock. THE ANIMAL MACHINE 21 is passed into the foetal circulation, through the arteries of the umbilical or navel cord and back through the veins of the same structure into the general venous circulation of the dam, to begin another cycle. By this means the foetus is nourished until after birth, when the establish- ment of respiration and digestion enables him to aerate his own blood and nourish his own tissues. All connection with his mother is cut off with the severing of the cord, which takes place soon after birth. 26. Parturition.
. The principles and practice of judging live-stock . Livestock. THE ANIMAL MACHINE 21 is passed into the foetal circulation, through the arteries of the umbilical or navel cord and back through the veins of the same structure into the general venous circulation of the dam, to begin another cycle. By this means the foetus is nourished until after birth, when the establish- ment of respiration and digestion enables him to aerate his own blood and nourish his own tissues. All connection with his mother is cut off with the severing of the cord, which takes place soon after birth. 26. Parturition. — Parturition is accomplished by the general relaxation of the ligaments which unite the bones. Fig. 10. — Pelvis of the mare, showing the dimensions of the pelvic girdle through which the foetus passes in delivery. A, coupling; B, point of the hip ; C, hip joint; D, point of the buttocks. constituting the pelvic girdle (Fig. 10), through which the foetus must pass, and the soft structures of the pelvic and perineal regions, followed by labor. Normally the foetus is presented head first, with the chin resting on the extended Digitized by Microsoft®. 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 Gay, Carl Warren, 1877-. New York : Macmillan
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectlivesto, bookyear1914
