. A text-book of animal physiology, with introductory chapters on general biology and a full treatment of reproduction ... Physiology, Comparative. 114 ANIMAL PHYSIOLOGY. The ovum in the fowl is fertilized in the upper part of the oviduct; in the mammal mostly in this region also, as is shown by the site of the embryos in those groups of animals with a two-horned uterus, and the occasional occurrence of tubal preg- nancy in. woman. But this is not, in the human subject at least, invariably the site of impregnation. After the ovum has been set free, as above described, it is conveyed into the o
. A text-book of animal physiology, with introductory chapters on general biology and a full treatment of reproduction ... Physiology, Comparative. 114 ANIMAL PHYSIOLOGY. The ovum in the fowl is fertilized in the upper part of the oviduct; in the mammal mostly in this region also, as is shown by the site of the embryos in those groups of animals with a two-horned uterus, and the occasional occurrence of tubal preg- nancy in. woman. But this is not, in the human subject at least, invariably the site of impregnation. After the ovum has been set free, as above described, it is conveyed into the ovi- duct (Fallopian tube), though exactly how is still a matter of dispute: some holding that the current produced by the action of the ciliated cells of the Fallopian tube suffices; others that the ovum is grasped by the fimbriated extremity of the tube as part of a co-ordinated act. It is likely, as in so many other instances, that both views are correct but partial; that is to say, both these methods are employed. The columnar ciliated cells, lining the oviduct, act so as to produce a current in the direction of the uterus, thus assisting the ovum in its passage toward its final resting place. Uenstraation,—As a part of the general activity occurring at this time, the uterus manifests certain changes, chiefly in its internal mucous lining, in which thickening and increased. 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 Mills, Wesley, 1847-1915. New York, D. Appleton
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