. Comparative embryology of the vertebrates; with 2057 drawings and photos. grouped as 380 illus. Vertebrates -- Embryology; Comparative embryology. TRANSPORTATION OF SPERM OUTSIDE GENITAL TRACT OF MALE 195. DORSAL PERITONEUM LUNG OVIDUCT Fig. 113. Open body cavity of adult female of Rana pipiens, showing distribution of cilia and ostium of oviduct. (Slightly modified from Rugh, '35.) pulses aroused during the reproductive act or orgasm together with the actual presence within the reproductive tract of seminal fluid. However, this nerve- muscular activity is assuredly not the only means of spe
. Comparative embryology of the vertebrates; with 2057 drawings and photos. grouped as 380 illus. Vertebrates -- Embryology; Comparative embryology. TRANSPORTATION OF SPERM OUTSIDE GENITAL TRACT OF MALE 195. DORSAL PERITONEUM LUNG OVIDUCT Fig. 113. Open body cavity of adult female of Rana pipiens, showing distribution of cilia and ostium of oviduct. (Slightly modified from Rugh, '35.) pulses aroused during the reproductive act or orgasm together with the actual presence within the reproductive tract of seminal fluid. However, this nerve- muscular activity is assuredly not the only means of sperm transport although it may be the more normal and common method. A slower means of trans- port, that of sperm motility, plays an important role in many instances. This is suggested by such facts as fertility being equal in women who experience no orgasm during coitus compared to those who do; proven fertility in rabbits and dogs whose genital tracts are completely de-afferented by spinal section; and conception by females artificially inseminated intra vaginum. (See Hart- man, '39, p. 699.) Moreover, Phillips and Andrews ('37) have shown that rat sperm injected into the vagina of the ewe along with ram sperm lag behind the ram sperm in their migration upward in the genital tract. That is, the abnormal environment of the genital tract of the ewe in which the rat sperm. 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 Nelsen, Olin E. (Olin Everett), b. 1898. New York, Blakiston
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