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[bungston], I worry about you. |
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The reason for the delay is quite simple. The ejaculatory mechanism is triggered by the action of two hormones. Inhibin, a peptide hormone produced by the Sertoli cells, which stimulates a pituitary hormone, one of the gonadatrophins, I think; and testosterone. The pair of them need to be in sufficient concentration to stimulate the hypothalamic - pituitary - testicular axis enough to trigger the sympathetic and parasympathetic nervous sytems to allow normal sexual function to recur. |
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The seminal vesicle is merely a gland that produces the bulk of the seminal fluid, primarily sugar (fructose) and prostaglandins, as well as clotting agents that cause semen to gel. |
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Other secretions come from the testes, epididymis and particularly the prostate, which produces citric acid, zinc (which may have an anti-microbial role) and choline. These contribute a fair percentage of the ejaculatory volume. The prostate also secretes several proteins including acid phosphatase, seminin, plasminogen activator and a handful of antigens. The specific roles of most prostatic secretions are unknown, though they appear to be important for the function of spermatozoa during and after ejaculation. |
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In particular, plasminogen activator and seminin are proteases involved in the liquification of coagulated ejaculate. |
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The male reproductive system is a little more complex than you seem to think. |
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Studied this area pretty hard, eh UB? |
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It seems strange that hormones would govern whether or not a man was able to ejaculate. If these two hormones were responsible, there would have to be a tremendous change in one or both at the time of orgasm such that another orgasm was not immediately possible. I am pretty sure testosterone levels do not fluctuate wildly. I do not know about inhibin. I suppose it might all go away at the time of orgasm, but really the only way the sertoli cells could pull this off is if they were cranking out inhibin like mad, all the time, and the stuff had a half life of a few seconds. If they stopped, inhibin levels would fall fast. But I dont know. |
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I remain fond of my hydraulic theory. |
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[RayF], I took an inordinate interest in human biology when my first wife was studying dentistry. Unfortunately I don't seem to be able to forget much of what I've read. |
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Unabubba - I love it when you talk dirty |
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Hah - too good, [benfrost]. |
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A different, though probably not better, solution to this ejaculatory/erectile hiatus problem could be to fiddle about with the human body in such a way as to result in a man *never stopping* ejaculating, instead being in a state of perpetual release. |
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Not dissimilar to one of the various "drippy dick" VDs? |
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As for the minute details of the hormone story, go see an endocrinologist. It's a pretty specialised field. |
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I don't get it...you mean some men have to wait? |
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The refractory period is Nature's way of telling you to do something else for a while. |
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[Dimie] - you probably thought they hired you as a porn star because of your good looks. |
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Jeez, when do I get to roll over and fall asleep? |
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