A reference handbook of the medical sciences, embracing the entire range of scientific and practical medicine and allied science . eaternumber around the neck, where they form thesphincter of the bladder or vesical sphincter. Theyform a sort of elhptical sphincter around the orifices ofeach ureter. The last and innermost layer of fibersare the plexiform fibers, which have no definitedirection. These fibers are not uniformly distributedover the organ, but form bundles more or less promi-nent which cross one another in all of the bundles make quite a projection on theinner surfac
A reference handbook of the medical sciences, embracing the entire range of scientific and practical medicine and allied science . eaternumber around the neck, where they form thesphincter of the bladder or vesical sphincter. Theyform a sort of elhptical sphincter around the orifices ofeach ureter. The last and innermost layer of fibersare the plexiform fibers, which have no definitedirection. These fibers are not uniformly distributedover the organ, but form bundles more or less promi-nent which cross one another in all of the bundles make quite a projection on theinner surface of the bladder, and may give rise tosmall pouches or alveoles. The muscular fibers areall of the smooth variety. The submucous areolar layer is marked, butpresents nothing special. The mucous layer presents nothing of interest ex-cept at the base. There the organ presents poste-riorly a slight depression called the bas-fond. Infront is seen a triangular surface called the trigone;it corresponds to tne prostate. The front anglecorresponds to the urethra, and the two posteriorangles to the openings of the ureters, remarkable. Fig. 647.—Sagittal Median Section through the Male one-third natural size. (Heitzmann). for their sht-like shape. The surface of the trigoneis smooth, and there the submucous layer is scantyand the mucous membrane is adherent to the sub-jacent muscular tissue. The mucous membrane is continuous in front withthat of the urethra, and behind with that of theureters. The exact nature of the glands which secrete themucus of the bladder is not well settled as yet, butthey are more Uke single racemose glands than any-tliing else. The bladder is provided with three arteries on eachside, the upper, middle, and inferior. They arederived from the internal iliac. The veins are specially abundant around the neckof the organ, where tliey form a marked plexus, themain formative branch of which is the dorsal vein ofthe penis. The lymphatics open into the pel
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Keywords: ., bookauthorbuckalbe, bookcentury1900, bookdecade1910, bookyear1913
