178 



THE ESSENTIALS OF HISTOLOGY 



LESSON XXXV. 



GENERATIVE ORGANS OF THE FEMALE, AND MAMMARY 



GLANDS. 



1. SECTIONS of the ovary of the rabbit. Study the sections with the low 

 power, observing the small and large Graafian vesicles, each enclosing an 

 ovum, scattered through the stroma. Measure some Graafian vesicles of 

 different sizes ; make a general sketch of a section under the low power. 

 Then sketch carefully two or more of the Graafian vesicles with their contents. 



2. Sections across the Fallopian tube. Sketch a section under the low power. 



eye 



the thickness of the muscular and mucous coats respectively. Notice the 

 ciliated columnar epithelium lining the organ and extending into the glands 

 of the mucous membrane. Draw a part of the section under the low power. 



4. Sections of the mammary gland from an animal killed during lactation. 

 Notice the fat-globules in the alveoli and also in the alveolar cells. Draw an 

 alveolus under the high power. 



The ovary is a small solid organ, composed of a stroma of fibrous 

 tissue, with many spindle-shaped cells, and also containing, especially 

 near its attachment to the broad ligament, a large number of plain 



FIG. 215. SECTION OF THE OVARY OF THE CAT. f 



1, outer covering and free border of the ovary ; 1', attached border ; 2, the central ovarian 

 stroma, presenting a fibrous and vascular structure ; 3, peripheral stronia ; 4, blood- 

 vessels : 5, Graafian follicles in their earliest stages lying near the surface; 6, 7, 8, more 

 advanced follicles which are embedded more deeply in the stroma ; 9, an almost mature 

 follicle containing the ovum in its deepest part ; 9', a follicle from which the ovum has 

 accidentally escaped ; 10, corpus luteum. 



