Treatise on gynaecology : medical and surgical . ms. Even the distinction between para- alid perimetritis stillmade by modern authorities seems unnecessary in clinical is a vestige of old theories. To understand the close connection ofthe uterus and the tubes, we must bear in mind the fact of their com-mon embryonic origin. At the end of the second month of intra-uterine existence, the ducts of Miiller become fused together at thelower portion to form the uterus and vagina, while above they remainseparate and form the tubes, which are in reality a slender prolonga-tion of the horns
Treatise on gynaecology : medical and surgical . ms. Even the distinction between para- alid perimetritis stillmade by modern authorities seems unnecessary in clinical is a vestige of old theories. To understand the close connection ofthe uterus and the tubes, we must bear in mind the fact of their com-mon embryonic origin. At the end of the second month of intra-uterine existence, the ducts of Miiller become fused together at thelower portion to form the uterus and vagina, while above they remainseparate and form the tubes, which are in reality a slender prolonga-tion of the horns of the uterus; the various coats of both are directly VOL. II.—1. 2 CLIISIICAL AND OPERATIVE GYNECOLOGY. continiions witli each other—a fact which explains the possibility ofascending salpingitis following endometritis, just as an ascendingpyelitis may follow chronic cystitis. The ovary, which is connectedwith the tube by the tubo-ovarian ligament and is almost directly incontact with the ampulla, may also be easily infected by Fig. 1.—Fallopian Tubes, Normal Condition. A, Transverse section of tube near the uterus. from the ampulla (Wyder). Layers of the Fallopian tube: 1, Upper and outermost layer, ser-ous coat; 2, layer of loose connective tissue, richly supplied with blood-vessels ; 3, muscular coat, muchthicker near the uterus (uterine segment) than near the ampulla (abdominal segment). It is principallymade up of circular fibres. Above and vt^ithin it is reinforced by longitudinal fibres, some of which spreadinto the mucous layer, others (the most external) penetrate between the layers of the broad ligament;still others go to the hilum of the ovary or are prolonged to the fundus of the uterus; a few fibres penetrateto the inner layer ; 4, mucous coat. The framework of this layer is embryonic connective infusiform cells; it projects into the lumen of the tube in longitudinal folds which have been cut through ob-liquely in the sect
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