The development of the human body; a manual of human embryology . remainsin place, and usually there is an effusion of a greater or lessamount of blood from the vessels of the theca interna into the follicular split in the wallthrough which the ovumescaped soon closes overand the cavity becomesfilled with cells separatedinto groups by trabe-cular of connective tissuecontaining blood-vessels(Fig. 12). These cellscontain a considerableamount of a peculiar yel-low pigment known aslutein, the color impartedto the follicle by this substance having suggested thename corpus luteum which is
The development of the human body; a manual of human embryology . remainsin place, and usually there is an effusion of a greater or lessamount of blood from the vessels of the theca interna into the follicular split in the wallthrough which the ovumescaped soon closes overand the cavity becomesfilled with cells separatedinto groups by trabe-cular of connective tissuecontaining blood-vessels(Fig. 12). These cellscontain a considerableamount of a peculiar yel-low pigment known aslutein, the color impartedto the follicle by this substance having suggested thename corpus luteum which is now applied to it. In later stages there is a gradual increase in the amountof connective tissue present and a corresponding diminu-tion of the lutein cells, the corpus luteum gradually losingits yellow color and becoming converted into a whitish,fibrous, scar-like body, the corpus albicans, which mayeventually almost completely disappear. These variouschanges occur in every ruptured follicle, whether or notthe ovum which was contained in it be fertilized. But. Fig. 11.—Ovary op a Woman Nine-teen Years op Age, Eight Daysafter Menstruation. d, Blood-clot; /, Graafian follicle; th,theca.—(Kollmann.) THE CORPUS LUTEUM. 41 the rapidity with which the various stages of retrogressionensue differs greatly according to whether pregnancyoccurs or not, and it is customary to distinguish the cor-pora lutea which are associated with pregnancy as corporalutea vera from those whose ova fail to be fertilized andwhich form corpora lutea spuria. In the latter the retro-
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectembryol, bookyear1902
