INFLUENCE OF DRUGS AFFECTING THE AUTONOMIC SYSTEM ON SEMINAL EJACULATION

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Abstract
Rabbits and boars were used to study the effect on the ejaculation process of various drugs known to affect the autonomic nervous system. Of those tried, only atropine had an effect, causing linear reduction, as the dose increased, of the logarithm of the number of spermatozoa ejaculated by rabbits. In the boar, the volume of semen was reduced, but at the dose levels employed total spermatozoa per ejaculate changed little. This suggests that the male accessory sex glands are partly controlled by the parasympathetic system and that this system also has an influence on spermatozoon movement from the epididymis through the vas deferens.

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