ANATOMY IN A NUTSHELL. 561 



has iii it fibrous tissue, plain muscular tissue which Ls derived from the super- 

 ficial muscular layer of the uterus. 



2. The tubo-ovarian (fimbria ovarica) joins the superior extremity of the 

 ovary with the fimbriated extremity of the Fallopian tube. 



3. The suspensory (lumbo-ovarian) is the upper part of the external border 

 of the broad ligament. 



In the normal position of the ovary, if their axes were continued, they 

 would meet in front of the uterus, but the position of the ovary varies because 

 the ligaments are attached to movable points. For instance, if the uterus 

 turns to the right the ovary of that side is vertical and the ovary of the opposite 

 side is nearlv horizontal. 



LESSON CXCIV. 



The ovary consists of a vascular stroma which contains the Graafian foll- 

 icles. 



The stroma is composed of connective tissue which has hi it cells, white 

 fibrous tissue, yellow elastic tissue, plain muscular fibers, blood vessels and 

 nerves. From the hilum a core, called medullary substance, passes into the 

 center of the ovary. It is composed of stroma and has passing from it numerous 

 trabecular to the cortex of the ovary, thus leaving spaces in which are situated 

 Graafian follicles. The tunica albuginea is a condensed layer of the stroma 

 which covers the ovary. The epithelial covering which surrounds the tunica 

 albuginea is the remains of the germinal epithelium. 



The Graafian follicles are the ova sacs which contain the ova. The ma- 

 jority of these Graafian follicles are microscopic, but when matured they lie- 

 come much larger. The smallest ones vary from g i to i of an inch in 

 diameter and the largest ones from i to * of an inch in diameter. 



The tunica fibrosa encloses the blood trunks and lymphatic spaces of the 

 follicle. This is the outer layer of the follicle. 



The tunica propria is a vascular layer composed of connective tissue cells 

 and capillar}' plexuses. This is the inner layer of the follicle. 



The membrana granulosa is the cell layer which lines the inner surface of 

 the Graafian follicle. 



The discus proligenis is that part of the membrana granulosa in which the 

 Ovum is imbeded. 



The membrana propria (vitalline membrane) is between the membrana 

 granulosa and the tunica propria. 



The corpus luteum is the yellow spot in the substance of the ovary and is 

 caused by the rupture of the Graafian follicle, but it disappears when impreg- 

 nation has not occurred. When impregnation has occurred it may undergo 

 remarkable development . 



The true corpus luteum (corpus luteum of pregnancy) is usually regarded 

 as absolute proof of previous impregnation. The false corpus luteum (corpus 

 luteum of menstruation) attains its greatesl development in less than a week 

 and begins to shrink in less than three weeks and completely disappears in a 



