IX. Neue Tatsachen und Probleme zur Lehre der Spermaimmunität

Vogt, E.

doi:10.1159/000298274

Cited by 1 publication

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“…This is the view of A. Mayer (1922), E. Vogt (1922), McCann (1925, and many others. It is a favorite explanation of "one-child sterility."…”

Section: Sperm Transport and The Sex Ratiomentioning

confidence: 56%

Ovulation and the transport and viability of ova and sperm in the female genital tract.

Hartman¹

1934

Sex and Internal Secretions: A Survey of Recent Research.

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Ovulation is the sine qua non of reproduction. It is a sharply demarked event, like birth or death; hence cyclic sexual phenomena in the maternal organism are most conveniently separated into those occurring before and those occurring after ovulation.By ovulation is meant the freeing of the ovum from the ovary and its expulsion into the body cavity, or into the ovarian bursa. Fertilization takes place in the body cavity, or, more usually, after the egg has been engulfed by the infundibulum of the oviduct and started on its journey to the uterus or the exterior. This is the typical procedure. However, in some fishes, the ova are fertilized within the follicle, the wall of which becomes modified into a nutritive organ, a kind of womb, in which the embryos develop for a time. In such cases ovulation and birth may be said to be synchronous. In other forms (Zoarces, e.g.) the eggs are shed but are retained within the ovarian capsule. The spent follicles, homologues of the corpora lutea of higher forms, undergo hypertrophy and become highly secretory, producing pabulum for the embryonic fish. The nutritive function of these "corpora lutea" is thus exemplified in a literal and diagrammatic way. These cases and many others that could be cited are exceptional but from a theoretical standpoint highly instructive, representing as they do primitive conditions which are postulated as theories when applied to man and other mammals (cf. Kohn in "Synkainogenese," 1916).

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“…This is the view of A. Mayer (1922), E. Vogt (1922), McCann (1925, and many others. It is a favorite explanation of "one-child sterility."…”

Section: Sperm Transport and The Sex Ratiomentioning

confidence: 56%