Each<unk>  vesicle consists of a single tube, coiled upon itself, and giving off several irregular cecal diverticula; the separate coils, as well as the diverticula, are connected together by fibrous tissue. When uncoiled, the tube is about the diameter of a quill, and varies in length from 10 to 15 cm.; it ends posteriorly in a cul-de-sac; its anterior extremity becomes constricted into a narrow straight<unk>  called the<unk>  (or<unk>  of the<unk>  vesicle), which joins with the corresponding<unk> us deferens to form the ejaculatory<unk> .
Excretory duct of seminal gland
Wolffian duct
Seminiferous tubules
Bulbourethral gland
Fallopian tube
Spermatic cord
Vitelline duct
Vas deferens