REPRODUCTIVE ORGANS IN THE FEMALE. 303 



gous to a like structure in the testicle, and is there- 

 fore called the tunica albuginea. This is not a dis- 

 tinct tunic but rather a condensed part of the ova- 

 rian matrix. It is not well defined, and is difficult 

 to demonstrate in sections. 



The medulla is practically the core of the ovary 

 and consists of a fibro-muscular matrix well supplied 



Young follicle with ovum. 



Ovum with 

 follicular 

 epithelium. 



Fig. 219. Section from ovary of adult dog. At the right the stellate 

 figure represents a collapsed follicle with its contents. Below and at the 

 right are seen the tubules of the parovarium (copied from Waldeyer). 



with blood- and lymph-vessels. In this substance 

 may be found connective-tissue cells, connective- 

 tissue fibers and a limited supply of smooth muscle 

 fibers. 



The Cortex. Between the medulla and the cap- 

 sule is the cortex. It is a broad zone, not well de- 

 fined, in which are found the same elements as in the 



