Gynaecology for students and practitioners . merous and not simple, but divided {see Fig. 24) ; in the ampulla theyform a complex arborescent mass of curling, slender processes, knownas theplicce {see Fig. 25). The plicae consist of a central core of hnelyinterlaced connective tissue containing round and spindle cells ; thereare also a few elastic fibres and muscle-fibres. Some of these plicaeare simple, but the majority are compound, and some of the latterattain a considerable thickness ; in the intervals between them thetube wall is covered with but a thin layer of mucous membrane. The 0 34
Gynaecology for students and practitioners . merous and not simple, but divided {see Fig. 24) ; in the ampulla theyform a complex arborescent mass of curling, slender processes, knownas theplicce {see Fig. 25). The plicae consist of a central core of hnelyinterlaced connective tissue containing round and spindle cells ; thereare also a few elastic fibres and muscle-fibres. Some of these plicaeare simple, but the majority are compound, and some of the latterattain a considerable thickness ; in the intervals between them thetube wall is covered with but a thin layer of mucous membrane. The 0 34 GYNECOLOGY lumen of this part of the tube accordingly consists of a complicatedsystem of branching channels or interstices between the plicse, withnumerous culs-de-sac in all parts. When the abdominal end is reachedthe plicse become smaller, the mucosa covering the fimbrise showingcomparatively few of them. The tubal epithelium consists of a single layer of columnar ciliatedcells ; the cilise are best developed in the ampullary portion, and. Fig. 24. Transverse Section through the Isthmus of the Fallopian Tube. their direction of movement is towards the uterus. Some of the cellsare not ciliated but are concerned in the production of the tubalsecretion, which is scanty, except in the premenstrual phase. Undernormal conditions there is no tubal haemorrhage during menstrua-tion, but under pathological conditions it is said that this mayoccur. Occasionally a second or accessory abdominal ostium surrounded byfimbrise may be found upon the dorsal aspect of the ampullary portion{see Fig. 52). Occasionally, also, diverticula may be found in the samepart of the tube, forming short tributaries of the main lumen ; they THE FALLOPIAN TUBES 35 are lined with a plicated mucous membrane, identical with the generaltubal mucosa. The tube is sup-plied with blood in thegreater part of its ex-tent from the tubalbranches of the ovarianartery ; the innermostpart of the isthmus issupplied from the an
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectgynecology, bookyear1
