The laws and mechanics of circulation, with the principle involved in animal movement . iddle(d) and outer layer (e) ; the inner and outer layers composedof longitudinal, the middle of circular fibres, the muscles beingthus systematically arranged. Now, then, since musclesrelate to work, why all this force for the vas. deferens?This also is easily answered ; notably, the spermatic fluid ishighly albuminous and very tenacious ; moreover, has to ascendthe tube perpendicularly (Fig. 206); hence, this degree of forcefor compelling circulation. But how compel % By contractingfrom below up ! Very we
The laws and mechanics of circulation, with the principle involved in animal movement . iddle(d) and outer layer (e) ; the inner and outer layers composedof longitudinal, the middle of circular fibres, the muscles beingthus systematically arranged. Now, then, since musclesrelate to work, why all this force for the vas. deferens?This also is easily answered ; notably, the spermatic fluid ishighly albuminous and very tenacious ; moreover, has to ascendthe tube perpendicularly (Fig. 206); hence, this degree of forcefor compelling circulation. But how compel % By contractingfrom below up ! Very well. But this involves several impor-tant circumstances for which we have been contending, nota-bly : 1. The fact of automatism in the organs, which isabsolutely essential to the performance of their functions ; alsoinvolving local mind centres for coordinating the movements,or the same as obtains for the separate independent organism,living and sustaining existence by itself. 2. It involves theprinciple for producing movements in the contents by means ACTION IX THE YAS DEFERENS. ^93. Kg. 205.—Transverse Section through the Commencing Portion of the Vas Deferens.—Klein, n, Epithelium ; b, tunica mucosa ; c, inner ; d, middle ; e, outer muscular-layer ; /, bundles of the cremaster internus ; g, vein containing muscles in its walls. Tunica ViyinalijTunica JMluj in ia
Size: 1287px × 1942px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookde, booksubjectblood, booksubjectrespiration
