. The physiology of reproduction. Reproduction. 452 THE PHYSIOLOGY OF REPRODUCTION it retains its thickness later in pregnancy. The deciduofracts remain distinct to the end, though they partly degenerate. Hence it is probable that during the whole, or nearly the whole, of pregnancy they exercise a phagocytic action on the maternal Fig. 114.—Transverse section through the uterus of Sorex at a stage when the blastocysts are still in the oviducts. The coiled uterine glands (Gl.) are massed together in the anti-mesometrial regions. The uterine lumen {V) is more or less J_-shaped. (From Hubre
. The physiology of reproduction. Reproduction. 452 THE PHYSIOLOGY OF REPRODUCTION it retains its thickness later in pregnancy. The deciduofracts remain distinct to the end, though they partly degenerate. Hence it is probable that during the whole, or nearly the whole, of pregnancy they exercise a phagocytic action on the maternal Fig. 114.—Transverse section through the uterus of Sorex at a stage when the blastocysts are still in the oviducts. The coiled uterine glands (Gl.) are massed together in the anti-mesometrial regions. The uterine lumen {V) is more or less J_-shaped. (From Hubrecht's "The Placentatiou of the Shrew," Quar. Jour. Micr. Sci., vol. xxxv., 1894.) B. v., blood-vessels ; cm., circular muscle ; , longitudinal muscle. tissues, and store nutriment which they give up to the embryo in a way as yet unknown. Shrew.—In the shrew (Hubrecht ^) the method of embedding is centric, and no decidua refiexa is formed. The yolk-sac pla- centa is not so well developed as in the hedgehog. The attachment of the blastocyst is modified, as in Ruminants, ' Hubrecht, "The Placentation of the Shrew," Quar. Jour. Micr. Sci., vol. XXXV., 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 Marshall, F. H. A. (Francis Hugh Adam), 1878-1949; Cramer, William, 1878-1945; Lochhead, James. London, New York, Longmans, Green
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