. A text-book of comparative physiology [microform] : for students and practitioners of comparative (veterinary) medicine. Physiology, Comparative; Veterinary physiology; Physiologie comparée; Physiologie vétérinaire. THE DEVELOPMENT OP THE EMBRYO ITSELF. 188 a face; 4. the Mine, to; vnni <• Intact born or tace; 9, brotMl llgtment; wlthlUfoWnrfmncoue ia»fold,»Yert««eof lur- 1t»; IB, inferior commto- Semen itself, though oompoMd essentially of spermatoMMt, is mixed with the secretions of the vas deferens, of the seminal vesicles, of Cowper's glands, and of the prostate. Chemically it is neut
. A text-book of comparative physiology [microform] : for students and practitioners of comparative (veterinary) medicine. Physiology, Comparative; Veterinary physiology; Physiologie comparée; Physiologie vétérinaire. THE DEVELOPMENT OP THE EMBRYO ITSELF. 188 a face; 4. the Mine, to; vnni <• Intact born or tace; 9, brotMl llgtment; wlthlUfoWnrfmncoue ia»fold,»Yert««eof lur- 1t»; IB, inferior commto- Semen itself, though oompoMd essentially of spermatoMMt, is mixed with the secretions of the vas deferens, of the seminal vesicles, of Cowper's glands, and of the prostate. Chemically it is neutral or alkaline in reaction, highly albuminous, and con- tains nuclein, lecithin, cholesterin, fats, and salts. The movements of the male cell, owing to the action of the tail (cilium), sufBoe of themselves to convey them to the ovi* ducts ; but there is little doubt that during or after sexual eon* gress there is in the female, even in the human subject, at least. Fio. 1S8 —Uteiiu and ovarlea of the torn, aemi-dlMmmniatlc (after Dalton). o, ovary; M, Fallopian tnbe; h, hem of Hifc oteruv; A, Dody of the ntenu; «, vagina. in many oases, a retrograde peristalsis of the uterus and ovi- ducts which would tend to overcome the results of the activity of the dilated cells lining the oviduct. It is known that the male cell can survive in the female organs of generation for several days, a fact not diffleult to understand, from the method of nutrition of the female cell (ovum); for we may suppose that both elements ar« not a little alike, as th^ axe both slightly modified amoeboid organisms. Varvmu MMliaainii —Incidental reference has been made to ihe directing influence of the nervous system over the events of reproduction; especially their subordination one to another to bring about the. general result These may now be consid- ered in greater detail. Most of the processes in which the uervous-«y8tem takes part are of the nature of reflexes, or the result of the autom
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