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The Midwife's Vade-Mecum, a non-fiction book by Aristotle

Chapter 16. Of the Organs of Generation in Man

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_ CHAPTER XVI

Of the Organs of Generation in Man.


Having given a description of the organs of generation in women, with the anatomy of the fabric of the womb, I shall now, in order to finish the first part of this treatise, describe the organs of generation in men, and how they are fitted for the use for which Nature intended them.

The instrument of generation in men (commonly called the yard, in Latin, _penis_, from _pendo_, to hang, because it hangs outside the belly), is an organic part which consists of skin, tendons, veins, arteries, sinews and great ligaments; and is long and round, and on the upper side flattish, seated under the _os pubis_, and ordained by Nature partly for the evacuation of urine, and partly for conveying the seed into the womb; for which purpose it is full of small pores, through which the seed passes into it, through the _vesicula seminalis_,[4] and discharges the urine when they make water; besides the common parts, viz., the two nervous bodies, the septum, the urethra, the glans, four muscles and the vessels. The nervous bodies (so called) are surrounded with a thick white, penetrable membrane, but their inner substance is spongy, and consists chiefly of veins, arteries, and nervous fibres, interwoven like a net. And when the nerves are filled with animal vigour and the arteries with hot, eager blood, the penis becomes distended and erect; also the neck of the _vesicula urinalis_,[5] but when the influx of blood ceases, and when it is absorbed by the veins, the penis becomes limp and flabby. Below those nervous bodies is the urethra, and whenever they swell, it swells also. The penis has four muscles; two shorter ones springing from the _Cox endix_ and which serve for erection, and on that account they are called _erectores_; two larger, coming from _sphincters ani_, which serve to dilate the urethra so as to discharge the semen, and these are called dilatantes, or wideners. At the end of the penis is the _glans_, covered with a very thin membrane, by means of which, and of its nervous substance, it becomes most extremely sensitive, and is the principal seat of pleasure in copulation. The outer covering of the _glans_ is called the _preputium_ (foreskin), which the Jews cut off in circumcision, and it is fastened by the lower part of it to the _glans_. The penis is also provided with veins, arteries and nerves.

The _testiculi_, stones or testicles (so called because they testify one to be a man), turn the blood, which is brought to them by the spermatic arteries into seed. They have two sorts of covering, common and proper; there are two of the common, which enfold both the testes. The outer common coat, consists of the _cuticula_, or true skin, and is called the scrotum, and hangs from the abdomen like a purse; the inner is the _membrana carnosa_. There are also two proper coats--the outer called _cliotrodes_, or virginales; the inner _albugidia_; in the outer the cremaster is inserted. The _epididemes_, or _prostatae_ are fixed to the upper part of the testes, and from them spring the _vasa deferentia_, or _ejaculatoria_, which deposit the seed into the _vesicule seminales_ when they come near the neck of the bladder. There are two of these _vesiculae_, each like a bunch of grapes, which emit the seed into the urethra in the act of copulation. Near them are the _prostatae_, about the size of a walnut, and joined to the neck of the bladder. Medical writers do not agree about the use of them, but most are of the opinion that they produce an oily and sloppy discharge to besmear the urethra so as to defend it against the pungency of the seed and urine. But the vessels which convey the blood to the testes, from which the seed is made, are the _arteriae spermaticae_ and there are two of them also. There are likewise two veins, which carry off the remaining blood, and which are called _venae spermaticae_.

FOOTNOTES:

[4] Seminal vesicle.

[5] Urinary vesicle. _

Read next: Chapter 17. A word of Advice to both Sexes...

Read previous: Chapter 15. The Use and Action of the several Generative Parts in Women

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