884 A MANUAL OF ANATOMY 



Abnormal Positions of tlie Ovary. — (i) The ovary, in its original descent, 

 may pass into the inguinal canal, and even into the labium majus ; (2) it may 

 pass through the crural ring into the crural canal, and lie over the saphenous 

 opening, where it may simulate a femoral hernia ; (3) an ovary, when enlarged, 

 may become prolapsed, and pass downwards and inwards behind the uterus 

 into the pouch of Douglas, where it may be palpated through the posterior 

 fornix of the vagina. 



For the 'structure and development of the ovary, see p. 892 

 et seq. 



Epobphoron (Parovarium of Kobelt), or Organ of Rosenmuller. — 



The epoophoron is situated in that portion of the mesosalpinx 

 which lies between the ovary and the Fallopian tube. It is com- 

 posed of a number of small blind tubules, lined with epithelium, 

 which converge towards the ovary, but do not meet. Their tubal 

 ends are united by a longitudinal tube, which V.is parallel with, 

 and a little below, the Fallopian tube. 



Paroophoron of Waldeyer. — ^The paroophoron is situated in 

 that part of the mesosalpinx which lies between the ligament of 

 the ovary and the Fallopian tube, where it is placed near the uterus. 

 It is composed of a few minute blind tubules, which can only be 

 discerned at or shortly after the period of birth. 



For the development of the epoophoron and paroophoron, see 

 Index. 



Fallopian Tubes. — The Fallopian tubes, right and left, serve to 

 convey the ova, after their escape from the Graafian follicles, into 

 the cavity of the uterus. They are, therefore, functionally the 

 ducts of the ovaries, and are hence spoken of as the oviducts. 

 Each tube is contained within the superior border of the broad 

 ligament, except at its extreme inner end, where the tube is 

 embedded in the uterine wall. It is fully 4 inches in length. Pro- 

 ceeding from the uterus, it passes at first horizontally outwards 

 for about i inch towards the lower or uterine pole of the ovary. 

 It then ascends vertically for a short distance upon the lateral 

 wall of the pelvis, where it lies internal to the anterior or attached 

 border of the ovary. Having arrived at the upper or tubal pole, 

 it arches backwards and descends along the posterior convex 

 border, and adjacent portion of the internal surface of the 

 ovary. Each Fallopian tube is divided into the following 

 parts : pars uterina, isthmus, ampulla, neck, and corpus fimbri- 

 atum ; and each has two openings, ostium uterinum, and ostium 

 abdominale. 



The fars uterina is the limited portion which is contained within 

 the uterine wall at the superior angle, and it presents the ostium 

 uterinum, which is about i millimetre in diameter. The isthmus 

 succeeds to the pars uterina, and represents about one-third of the 

 tube. It is straight, round, and firm to the touch, due to the pre- 

 dominance of circular muscular fibres in this portion. Its diameter 

 is about 2\ millimetres. The ampulla succeeds to the isthmus. 



