THE OVARY. 



691 



of the prostate. The upper extremities of the Miillerian ducts 

 form the hydatids of Morgagni. 



The ovary, like the testicle, is formed from the germinal epi- 

 thelium, which multiplies and forms a projection close to the 

 Wolffian body. The cells of the epithelium become involuted 

 and surrounded by the uncleft mesoblast, to form ova and 

 Graafian follicles. The glandular part of the ovary thus arises 



FIG. 280. 



Diagram of the sexual organs of the male embryo. (Allen Thomson.) 3. Ureter. 

 4. Bladder. 5. Urachus. 1. Testicle, m. Atrophied duct of Mttller (hydatid of Mor- 

 gagni). e. Epididymis, g. Gubernaculum testis. vs. Vesicula seminalis. t. Intestine. 

 pr. Prostate. W Organ of Giraldds. vh. Vas aberrans. vd. Vas deferens. C. Cowper's 

 gland, ep. Penis, sp. Spongy part of the urethra, t'. Position the testicle ultimately 

 assumes, s. Scrotum. 



from the germinal epithelium, and its stroma springs from the 

 mesoblast in the neighborhood of the Wolffian body. 



The ducts of Mu'ller are the precursors of the female genital 

 passages. They approach one another and unite along a certain 

 distance at their lower extremities. Of this united part the upper 

 end forms the uterus, and the lower the vagina, while the un- 



