. The comparative anatomy of the domesticated animals. Veterinary anatomy. a short, but very i^alient veru montanum, which divides iuto two raucous columns, that gradually subside posteriorly; 2, Towards the ischial arcli, a valve whose free border, directed downwards, covers a cul-de-sac about 3-±ths to 1 inch deep. The structure of the urethra is also different. The walls of the memhranous portion are thicker than in the Horse; they have a layer of erectile tissue, and a Wilson's muscle, very thick below and laterally, and whose fibres are inserted in the middle of the upper surface, into an
. The comparative anatomy of the domesticated animals. Veterinary anatomy. a short, but very i^alient veru montanum, which divides iuto two raucous columns, that gradually subside posteriorly; 2, Towards the ischial arcli, a valve whose free border, directed downwards, covers a cul-de-sac about 3-±ths to 1 inch deep. The structure of the urethra is also different. The walls of the memhranous portion are thicker than in the Horse; they have a layer of erectile tissue, and a Wilson's muscle, very thick below and laterally, and whose fibres are inserted in the middle of the upper surface, into an aponeurotic laphe'. At the ischial arch, when the canal bends downwaids, the spongy tissue becomes more aljunlaut to form the bulb of the urethr/i: but the prominence at this point is chiefly due to the accelerator urinaj, as is shown in figure 404, c, 4. This muscle is extremely powerful, but it so(m ceases beneath tlie ischial arch. The iransversus perinei is as strong as in Solipeds. Glands annexed to the urethra.— Cowper's (jJands are absent. The pros- tate gland is not voluminous, and forms, at the commencement of the urethra, a little transverse yellow mass, beneath which pass the vasa deferentia; it also lies beneath Wilson's muscle, and is |)rolonged for some distance on the mem- branous portion of tbe urethra. Penis.—In the Bull, the penis is long and thin, and carried well forward be- neath tlie belly. It is inclosed at the perineum in an aponeurotic sheath, which is covered by the ischio-tibial muscles. This sheath is double, its superficial layer being continuous with the dartos, and has the same physical characters; the deep layer is thin, white, anil inelastic. In front of the pubis, the penis des- cribes two successive curves—the 8 of the penis—the first with its conve.\ity forwards, the secimd backwards. It is at the second curve that the suspensory ligaments join the penis, and continue along its sides to its extremity. The free joortion of the organ,
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Keywords: ., bookauthorchauveauaauguste18271, bookcentury1800, bookdecade1870
