The generative system and its functions in health and disease / by James George Beaney.

  • Beaney, James George, 1828-1891.
Date:
1883
Catalogue details

Licence: Public Domain Mark

Credit: The generative system and its functions in health and disease / by James George Beaney. Source: Wellcome Collection.

Provider: This material has been provided by the Francis A. Countway Library of Medicine, through the Medical Heritage Library. The original may be consulted at the Francis A. Countway Library of Medicine, Harvard Medical School.

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    produce the needful irritation, still further back there are, in some species, two stout and strong horny saws appended to the sides of the organ. From this terrible armature of the male cavys it would be only natural to expect some corre- sponding peculiarity in the female parts, but, however inexplicable it may appear, the female vagina offers no uncommon structure.—Rymer Jones. Thus recent researches seem to demonstrate that the mus- cular contractions, the effect of which is to hamper the venous circulation, play a considerable part in the pheno- mena of erection; nevertheless, they do not play the prin- cipal part, and should not be considered otherwise than as auxiliaries to the act. The first phenomenon observed—that by which erection commences, and without which it would not manifest itself —is the dilatation of the little arteries and veins under the influence of the vaso-motor nerves. These are the erector nerves; the}7 arise from the sciatic plexus, and are distri- buted with the vessels in the side of the bladder and prostate, as far as the membraneous and bulbous portion of the urethra, where we cease to follow them.—Acton.