. Fig. 5. Dissection to show the development of the male reproductive system, x 15. afl, anterior flexure; ej, ejaculatory duct; g, gut; Ip, lateral pocket; pfl, posterior flexure; /, testis; sps, spermatophore sac; vd, vas deferens. This anterior flexure is bent first outwards and then inwards again. The vasa deferentia are also more swollen behind the external genital apertures. The follicles of the testis increase in size until they are closely crowded together, hiding the horseshoe-shaped band. Both the anterior and posterior flexures grow larger, the vasa deferentia begin to show coiling,
. Fig. 5. Dissection to show the development of the male reproductive system, x 15. afl, anterior flexure; ej, ejaculatory duct; g, gut; Ip, lateral pocket; pfl, posterior flexure; /, testis; sps, spermatophore sac; vd, vas deferens. This anterior flexure is bent first outwards and then inwards again. The vasa deferentia are also more swollen behind the external genital apertures. The follicles of the testis increase in size until they are closely crowded together, hiding the horseshoe-shaped band. Both the anterior and posterior flexures grow larger, the vasa deferentia begin to show coiling, while the lateral pocket Ip is more marked (Fig. 5). Coiling extends gradually over the whole length of the vasa deferentia between the anterior and posterior flexures. At the same time, the walls of the ducts become thickened, especially in the region of the lateral pockets Ip. At this stage there is often
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Keywords: ., bookcentury1900, booksubjectocean, booksubjectscientificexpediti
