File:Manual of human histology (1853) (14803436813).jpg

Identifier: manualofhumanhis02kl (find matches)
Title: Manual of human histology
Year: 1853 (1850s)
Authors: Kölliker, Albert, 1817-1905 Busk, George, 1807-1886, ed. and tr Huxley, Thomas Henry, 1825-1895, ed. and tr
Subjects: Histology Histology
Publisher: London : printed for the Sydenham society
Contributing Library: Francis A. Countway Library of Medicine
Digitizing Sponsor: Open Knowledge Commons and Harvard Medical School

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utgiving off a small twig to the bulbs of the crura. In thiscourse they afford numerous, occasionally anastomosing branchesto the spongy substance, which, running in a convoluted manner(except at the time of erection) in the axis of the traheculm, ramifyin them, and ultimately, without the formation of capillaryplexuses open into the venous spaces, by capillaries of 0-006—OOl in diameter. In the posterior part of the penis thereare numerous minute arterial trunks, measuring 0*04—008in diameter, and for the most part lying from 3—10 together,as was first observed by J. Miiller; they are contorted andconvoluted in a peculiar, tendril-like manner (arterias helicince),and do not terminate in csecal ends, but, as I have ascer-tained, give off from their clavate extremities minute vessels of0006—OOl, which, like the other arterial prolongations, arecontinued further, and terminate in the venous spaces. Thearterial ramification is precisely similar, in the corpus cavernosum Fig. 262.
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urethrce, which is furnished with its supply from the ar^t. Fig. 262. Arteries from the corpora cavernosa penis oi Man, injected, x 30 diam.1. one of the smaller arteries, with a lateral branch, dividing into two helicine ar-teries, from the extremities of which two very small vessels proceed, and are con-tinued into the delicate trabeculcB; 2. five helicine arteries placed on a short stem ofa larger arterial division; from two of these, fine vessels are seen to be given oflf, theothers appear to terminate in cascal ends : a, trabecular tissue, here presenting theform of sheaths to the arterial trunks and helicine arteries; b, wall of the arteries. THE SEXUAL ORGANS. 239 bulbosa, bulbo-urethrales, and dorsales, and in the bulb therealso exist a7t. helicince. The veins commence, as it may besaid, in the venous spaces which intercommunicate throughout;and from which, though not universally from the same situations,short eflfeient canals, or emissaria^ receive the blood and conveyit into

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