Textbook of normal histology: including an account of the development of the tissues and of the organs . propria by a well-defined basement-membrane, covers the mucosa;outside of the latter lies a sub-mucous layer of laminated con-nective tissue, which is embraced by the muscular tunic, consisting of an inner circular and anouter longitudinal layer. The ampulla possesses the same coats as the vas deferens, althoughin the former the several layers are somewhat thinner. The sem-inal vesicle, likewise, consists of a mucous coat, lined by stratifiedcolumnar epithelium, a submucous and a muscular t
Textbook of normal histology: including an account of the development of the tissues and of the organs . propria by a well-defined basement-membrane, covers the mucosa;outside of the latter lies a sub-mucous layer of laminated con-nective tissue, which is embraced by the muscular tunic, consisting of an inner circular and anouter longitudinal layer. The ampulla possesses the same coats as the vas deferens, althoughin the former the several layers are somewhat thinner. The sem-inal vesicle, likewise, consists of a mucous coat, lined by stratifiedcolumnar epithelium, a submucous and a muscular tunic. Small,often branched, tubular glands occur within the mucous membraneof the ampulla and the seminal vesicle. The ejaculatory duct,formed by the union of the vas deferens and the duct of the seminalvesicle, contains a single layer of columnar epithelium, supportedby the fibrous tunica propria; a thin submucosa, together with aslightly developed inner circular and an outer longitudinal stratumof muscle, completes the wall of the duct. Connected with the epididymis are certain atrophic appendages. Section through lower part of epididymisof child, showing general structure: a, fibro-serous envelope ; />, sections of convoluted tubeof epididymis ; c, vas deferens ; d, intertubulartissue ; e, blood-vessels. 21a NORMAL HISTOLOGY. which represent the remains of foetal organs. Such structures arethe paradidymis and the stalked and sessile hydatids. The paradidymis, or the organ of Giraldes, consists of irregulartubules lying among the convolutions of the epididymis, which arethe atrophic remains of the tubes of the Wolffian body. Theyare lined with low columnar or cuboidal epithelial cells, often ciliated,and are surrounded by an envelope of vascular connective tubules of the paradidymis are usually closed, and frequentlycontain small quantities of albuminous fluid. The pedunculated or stalked hydatid, common to both sexes,probably represents a part of the atrophied
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Keywords: ., bookauthorpiersolgeorgeageorgea, bookcentury1800, bookdecade1890
