Textbook of normal histology: including an account of the development of the tissues and of the organs . stinum stoutfibrous septa radiate to the pe-riphery, thus dividing the organinto a number of irregular pyram-idal compartments or lobules,in which the seminiferous tubulesare contained. The tunica albu-ginea consists of a dense fibrousfelt-work of bundles of nbro-elastictissue ; the looser, inner layers sup-port numerous blood-vessels, con-stituting the tunica outer surface of the albuginea,through the greater part of itsextent, is covered by the viscerallayer of the tunica va
Textbook of normal histology: including an account of the development of the tissues and of the organs . stinum stoutfibrous septa radiate to the pe-riphery, thus dividing the organinto a number of irregular pyram-idal compartments or lobules,in which the seminiferous tubulesare contained. The tunica albu-ginea consists of a dense fibrousfelt-work of bundles of nbro-elastictissue ; the looser, inner layers sup-port numerous blood-vessels, con-stituting the tunica outer surface of the albuginea,through the greater part of itsextent, is covered by the viscerallayer of the tunica vaginalis,which supplies a serous investmentto much of the testicle, as well asto a portion of the epididymis. The testicle lies behind and out-side the serous sac, the latter be-coming invaginated by the testicle during its descent into the scrotum ; that part of the posterior bor-der of the testicle included between the reflected folds of the tunicavaginalis is devoid of serous covering, and affords a position for theentrance and escape of the blood-vessels, the ducts, the lymphatics,and the Diagram illustrating the course and the rela-tions of the various constituents of the testicleand the epididymis: a, tunica albuginea; m,the mediastinum ; t, convoluted, s, straignt, por-tions of seminiferous tubules ; r, rete testis ; e,vasa efferentia ; c, coni vasculosi ; te, tube ofepididymis ; vd, vas deferens ; va, vas aberrans ;/, paradidymis. 208 NORMAL HISTOLOGY. The seminiferous tubules may be conveniently divided intothree portions: (i) the tortuous convoluted tubules, whose wind-ings contribute the bulk of the lobule, (2) the straight tubes,situated in the apices of the pyramidal lobules, and (3) the tubuleswithin the mediastinum, which by their union form the retetestis. The seminiferous tubules terminate in the mediastinum, fromwhich situation the seminal canals are continued by intermediate ves-sels connecting testicle and epididymis ; these intermediate tubulesare t
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Keywords: ., bookauthorpiersolgeorgeageorgea, bookcentury1800, bookdecade1890
