. Annals of applied biology. Biology, Economic; Biochemistry. W. Ritchie 189 or tube arises known as the vas deferens {). The vasa deferentia unite later to form a common duct {) which leads to the penis. The vas deferens is much swollen but there are constrictions on it at two points. The first constriction occurs at a point distant from the testis of about one-quarter of its total length, while the second is at a point about a corresponding distance from the other end of the vas. The first con- striction is most marked, the second is not so conspicuous. The s^Vollen. Fig. 11. Male re
. Annals of applied biology. Biology, Economic; Biochemistry. W. Ritchie 189 or tube arises known as the vas deferens {). The vasa deferentia unite later to form a common duct {) which leads to the penis. The vas deferens is much swollen but there are constrictions on it at two points. The first constriction occurs at a point distant from the testis of about one-quarter of its total length, while the second is at a point about a corresponding distance from the other end of the vas. The first con- striction is most marked, the second is not so conspicuous. The s^Vollen. Fig. 11. Male reproductive organs of C. abietis (greatly magnified). On the right the penis is shown in side view (more highly magnified). portion of the vas lying between the second constriction and its union with the vas deferens from the other testis, the most posterior portion of each vas, is called the seminal vesicle {). Two blind diverticula, the accessory glands (), one on either side and placed opposite each other, open into the vas deferens just at its second constriction. The chitinous portion of the penis (P.) is composed of the fork (F.), ring (R.) and sheath (*S'.). The fork gradually tapers to a point while anteriorly Ann. Biol, v 13. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Association of Applied Biologists; Association of Economic Biologists. [Wellesbourne, Warwick, etc. ] Association of Applied Biologists [etc. ]
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbiochem, bookyear1919
