66 



mediate steps between them and the young ova ? Remember the 

 difference of opinion as to the origin of the follicle cells. 



(18). Ovary. Cat (young). Preparation previously made 

 (18). 



In this will be found stages in the formation of the Graafian 



follicles. Note the layer of young ova under the tunica albuginea, 

 Graafian follicles with one layer of follicle cells surrounding the ova, 

 follicles with a several-layered follicular epithelium, and older follicles 

 in which the cavity of the follicle has appeared. 



146. Corpus luteum. Section of the ovary of a pregnant 

 ; collodion ; sections yu. Stain with 



In studying this preparation understand when and how the 

 corpus luteum is developed. Note its structure, observing the poly- 

 hedral cells, the connective tissue, and the blood vessels. Is there 

 any trace of the original cavity of the follicle ? 



FAI^OPIAN TUBE. 



147. Fallopian tube. . ; paraffin ; sec- 

 tions //. Stain with hematoxylin and picrofuchsin. 



Identify the coats, noting their structure, the extensive folds of 

 the mucosa, the character of the lining epithelium, the presence 

 of a muscularis mucosae (?) the arrangement of the fibers in the 

 muscular coat, the character and location of the blood vessels. Are 

 all the cells of the epithelium ciliated ? 



UTERUS. 



148. Uterus. . Transection. ; 

 collodion ; sections /*. Stain with hematoxylin and eosin. 



The same coats are present as in 147, but note the differences, 

 especially (#) the character of the lining epithelium, (b) the pecu- 

 liar structure of the mucosa, (c) the glands contained in the mucosa, 

 (d) the thickness of the innermost muscular layer and the direction 

 of its fibers, (e) the veins. 



VAGINA. 



( I 37)-. Vagina. . Transection. Preparation already 



made (137). 



Recognize the three coats and study the structure of each, not- 

 ing (a) the character of the lining epithelium, (#) the structure of 

 the mucosa, (c) the course of the fibers of the muscular coat. Are 

 ganglia recognizable in the muscularis or mucosa ? Note 'the num- 

 ber and size of the blood vessels. 



