65 

 THE GKNITAI, ORGANS : FEMAIvE. 



LABORATORY WORK FOR THE WKEK. 



References : 



Points for Quiz : 



Laboratory Report : 



Due : 



Obtain from the delivery desk, (a) paraffin section, 147 ; 

 (b) collodion sections, 145, 146, 148. 



OVARY. 



145. Ovary. . ; collodion ; sections /^. 



Stain with hematoxylin and eosin. 



Examine the gross preparations for the shape, superficial ap- 

 pearance of the ovary and its relations to the ligaments and to the 

 Fallopian tube. In the section, note the regions, roughly defined, — 

 the cortex and medulla and the structural appearance of each. As 

 composing the ovary, note (a) the covering tunica albuginea, (b) 

 the ovarian stroma containing (c) Graafian follicles at various stages 

 of maturity, together with (d) the blood vessels and nerves. Points 

 to which attention is called are (z) the peculiar structure of the 

 stroma of the ovary, (2) the large size of the veins, and (j) the 

 structure of the mature Graafian follicle. In studying the Graafian 

 follicle, recognize (a) the theca and its layers ; (5) the membrana 

 granulosa surrounding the cavity of the follicle and bearing on one 

 side an eminence containing the ovum, — the discus proligerus. 



Study carefully the structure of the ovum and its parts, identi- 

 fying it as a single cell, and comparing it with other cells. Under- 

 stand how the ovum may escape from the ovary by the rupture of 

 the Graafian follicle. Compare i. 



(19). Ovary. Cat, new-born (1-2 weeks). Assigned for 

 study. 



This preparation illustrates especially (a) the germinal epi- 

 thelium, (b) the egg-nests or egg-tubes, and (c) early stages in the 

 formation of Graafian folliclfes. Examine the germinal epithelium 

 to find here and there the large sexual cells. Can you find inter- 



