. The physiology of reproduction. Reproduction. 550 THE PHYSIO r-OGY OF REPRODUCTION. Fig. 133.—^Virginal exter- nal OS (human). (From Williams' Obstetrics, Appleton & Co.) After a first delivery its outlet remains permanently wider than before. The rugae reappear about the third week. The place of the hymen is taken by numerous small tags of tissue which become transformed into the carunculse myrtiformes. The condition of. the labia majora and labia minora is generally flabby and atrophic as contrasted with that exist- ing in virgin women. The characteristic changes which occur in the bre
. The physiology of reproduction. Reproduction. 550 THE PHYSIO r-OGY OF REPRODUCTION. Fig. 133.—^Virginal exter- nal OS (human). (From Williams' Obstetrics, Appleton & Co.) After a first delivery its outlet remains permanently wider than before. The rugae reappear about the third week. The place of the hymen is taken by numerous small tags of tissue which become transformed into the carunculse myrtiformes. The condition of. the labia majora and labia minora is generally flabby and atrophic as contrasted with that exist- ing in virgin women. The characteristic changes which occur in the breasts in connection with the secretion of milk are described in the next chapter. The quantity of urine passed during the first two days of the puerperium is generally above the average. The urine frequently contains sugar, which may be either glucose or lactose. In the latter case it is generally beheved that the sugar has been absorbed into the circulation from the changed mammary glands. When glycosuria occurs, it is probably comparable to post-opera- tive glycosuria (see p. 510 and pp. 571—573). Albumen may also be present in the urine in the first days of the puerperium. It is stated further that there is an increase in the amount of acetone ^ (see also p. 507). As mentioned above, a marked leuco- cytosis occurs during labour. According to Hofbauer,^ this becomes still more pronounced during the first twelve hours of the puerperium, after which the number of leucocytes in the blood faUs again and in a short time becomes normal. Henderson ^ states that on the fifth day the average number of leucocytes per cubic milhmetre is 12,000, whereas immediately after parturition it is 21,000, as ^ Scholten, "Ueber Puerperale Acetonurie," Hegar's Beitrage zur Oeb. und Gyndk., vol. iii., 1900. 2 Hofbauer, "Zur Physiologie des Puerperiums," Monatsschr. f. Oeburt. und Gyniik., vol. v., 1897. " Henderson, " Observations on the Maternal Blood at Term and du
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