. An American text-book of obstetrics. For practitioners and students. nd the discharge of theliquor folliculi and the egg surrounded by the discus proligerus, the ovum passesthrough a series of changes collectively termed maturation, by which the femalesexual cell is prepared for the reception of the male element, without the com-pletion of which preparation fertilization of the ovum is impossible. The maturation of the ovum consists essentially in the very unequal andrepeated division of the egg, by which two minute portions of its substance, >;& /;;-. ^0. Jfe; Fig. 62.—Portions of ova of
. An American text-book of obstetrics. For practitioners and students. nd the discharge of theliquor folliculi and the egg surrounded by the discus proligerus, the ovum passesthrough a series of changes collectively termed maturation, by which the femalesexual cell is prepared for the reception of the male element, without the com-pletion of which preparation fertilization of the ovum is impossible. The maturation of the ovum consists essentially in the very unequal andrepeated division of the egg, by which two minute portions of its substance, >;& /;;-. ^0. Jfe; Fig. 62.—Portions of ova of Asterias glacialis, showing changes affecting the germinal vesicle at thebeginning of maturation (Hertwig): a, germinal vesicle; 6, germinal spot, composed of nuclein andparanuclein (c); d, nuclear spindle in process of formation. the polar bodies, are extruded ; the remainder of the cell after the completionof this cycle returns to a quiescent condition to await the advent of the malesexual element. Maturation takes place entirely independently of the influ-.
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectobstetrics, bookyear1
