. The comparative anatomy of the domesticated animals. Veterinary anatomy. TEE MALE GENITAL 0E0AN8. 855 framework, Bometimes not very apparent, whicli, ciirving upwards at both extremities, extends from that body to the posterior end of the testicle, where it disappears ; from this are given off a large number of fibrillsB (trabeculm testis), which diverge in all directions. A mercurial injection by the vas deferens, shows that this part of the testicle is chiefly formed by a ramifying system of rectilinear canals with very thin walls, which open iato each other, and unite, on reaching the cor
. The comparative anatomy of the domesticated animals. Veterinary anatomy. TEE MALE GENITAL 0E0AN8. 855 framework, Bometimes not very apparent, whicli, ciirving upwards at both extremities, extends from that body to the posterior end of the testicle, where it disappears ; from this are given off a large number of fibrillsB (trabeculm testis), which diverge in all directions. A mercurial injection by the vas deferens, shows that this part of the testicle is chiefly formed by a ramifying system of rectilinear canals with very thin walls, which open iato each other, and unite, on reaching the corpus JEighmori, into about twenty principal trunks. These are named the straight canaliculi (vasa recta), to distinguish them from the convoluted tubuli; they receive the latter at their exit from the lobules, and are surrounded by numerous blood- vessels and sustained by the fibrous septa of the tunica albuginea, which appear to converge towards the point they occupy. At the corpus Highmori, the vasa recta pass through that body, forming in its texture an anasto- mosing network, the rete testis, and are continued into the epididymis as the efferent canals (vasa efferentia). The seminiferous tubes in the lobules are from y^ to the â j^ of an inch in Fig. 398. diameter. They are composed of a very thin fibrous membrane (firmer than that in the walls of similar gland canals elsewhere); slightly elastic, and made up of connective tissue with longitudinal nuclei, this mem- brane is lined internally by a proper amorphous membrane (basement) and epithelium. The latter almost com- pletely fills the tubuli; near the wall of the canal it is composed of polygonal cells, but towards the centre these in- crease in volume, become circular and transparent, and show several nuclei ia various stages of transformation; finally, ia the axes of the tubuli can be perceived spermatozoa and the detritus of the spermatic cells. Vessels and nerves.âThe blood is carried to the testicle by the spermati
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Keywords: ., bookauthorchauveauaauguste18271, bookcentury1800, bookdecade1880
