602 



JAMES R. GOODALL 



Surface 



Boundary of Ovary 



Mesosalpinx 



Med. Ray 



Rete Ovarii 



Kobelt 



The first? type of tissue, derived from the mesoblastic tissue of the 

 Wolffiaii body, presents very little change in its pathological processes 

 from that of similar tissue in other parts of the body, except perhaps modi- 

 fications due to position and environment. 



The second class of tissue is derived from the germinal epithelium 

 covering the ovary through multiplication of the cells underlying the 

 germinal cells. They are of a much higher order of development than 

 those of the previous group. Their true nature was in doubt until the 

 splendid work of Miss Lane-Claypon and Miss Mcllroy placed our knowl- 

 edge on a sound basis. These cells having the same origin as the true 



oogenetic cells, possess 

 much of the potentiality 

 of the oogenetic tissues. 

 These cells have a normal 

 function of secretion which 

 may pass over readily into 

 a pathological state owing 

 to morbid conditions. 



The third type of tissue 

 has to do with reproduc- 

 tion, the development and 

 maturing of the ovum, and 

 the growth of pregnancy. 

 These cells of this third 

 group are the result of the 

 downgrowth of the germi- 

 nal epithelium and at one 

 state of their fetal develop- 

 ment (testicular stage) form continuous tubes or cellular columns which 

 pursue a devious course from the cortex of the ovary to the rete ovarii and 

 thence as tubules to form a union with the Wolman body beyond the con- 

 fines of the ovary. (Vide Fig. 1.) At a later stage of development 

 portions of these medullary rays develop into primordial ova, whilst other 

 portions atrophy and disappear. The retention of many of these latter 

 portions, which normally should have disappeared, constitute the fetal 

 rests of the adult ovary. These are found in every adult ovary, but in 

 some in such small proportion as to make it difficult to find them ; in others 

 such fetal rests are abundant. 



Arrest of development may take place at any stage of development 

 and such ovaries retain permanently structures which are usually only a 

 temporary development. There will be occasion to revert to this later. 

 The ovaries as endocrin bodies have a dual function. The secretion 

 of the interstitial cells is more or less continuous throughout sexual life, 

 whereas that of the generative cells is special and more or less intermittent. 



"Gaer trier's Duct 

 Fig. 1. Diagram of development of the ovary. 



From author's work, "The Origin of Tumours of 

 the Ovary." Surg. Gyn. and Obst., vol. xxx, No. 3, 

 March, 1920, pp. 249-263. 



