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Updated: May 2, 2025
It is true one may argue that the zoospores of certain cryptogamia exhibit similar movements; but do not these zoospores possess as much of an animal nature as do the spermatozoa?
"Besides," Kennon added, "I have a microscope. I checked your so-called fertilizing solution. I found spermatozoa, and spermatozoa only come from males. What's more, the males have to be the same species as the females or fertilization will not take place. So there must be male Lani. Nothing else fits. You've been using artificial insemination on the main-island Lani.
Nature has provided that the secretion from Cowper's glands should precede the generative products along the urethra, thus neutralizing the acid and insuring for the spermatozoa an alkaline passage from the body.
Old age and debility from disease or poor care may induce loss of sexual desire and an absence of, or weakened spermatozoa in, the seminal fluid. The refusal of the male to serve certain females is sometimes noted. Tuberculosis may affect the ovaries and cause permanent sterility.
It is imagined that the narrow aperture of the smaller cells, and the manner in which the form of this aperture compels the queen to bend forward, exercise a certain pressure upon the spermatheca, in consequence of which the spermatozoa spring forth and fecundate the egg as it passes. In the large cells this pressure would not take place, and the spermatheca would therefore not open.
The general belief still remained, however, that the woman's part in conjugation is passive, and that it is entirely by the energy of the male organ and of the male sexual elements, the spermatozoa, that conjunction with the germ cell is attained.
To revert to the function of the testes, we may say that during these various stages of sexual stimulation and excitement the testes are actively secreting thousands upon thousands of nascent spermatozoa, which being released, are hurried along, partly by their own flagellate movements and partly by the action of the cilia in the ducts of the epididymis and the peristaltic contractions of the vas deferens hurried along the vas to the ampulla.
With the myriads of spermatozoa swarming about it, if the vital part of the ovum comes in contact with some one of them, any one of which, brought into such contact, will fertilize it, conception results. The woman is then pregnant, and the period of gestation is begun. This is a brief description of the act of coitus and of the means by which pregnancy takes place.
What more can we manage to want? The suggestion has come to more than one student, that when we enter into life as spermatozoa, or star dust if you please we enter into the eternal life, but that the physical conditions essential to our development into appreciating it, are a sort of veil between it and our consciousness.
As they possess definite canals for the removal of their gross secretion, the specific reproductive cells, ova or spermatozoa, to a surface of the body, they are first of all glands of external secretion.
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