694 



MANUAL OF PHYSIOLOGY. 



Hum, which multiplies and forms a projection close to the Wolf- 

 fian 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 from the 



FIG. 280. 



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

 3. Ureter. 4. Bladder. 5. Uraehus. t. Testicle, m. Atrophied duct of 

 Miiller (hydatid of Morgagni). e. Epididymis. g. Gubernaculum testis. 

 vs. Vesicula seminalis. i. Intestine, pr. Prostate. W. Organ of GiraldSs. 

 vh. Vas aberrans. vd. Vas deferens. C. Cowper's gland, cp. Penis, sp. 

 Spongy part of the urethra, t' '. Position the testicle ultimately assumes. 

 . Scrotum. 



germinal epithelium, and its stroma springs from the mesoblast 

 in the neighborhood of the Wolffian body. 



The ducts of Miiller 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, whilst the un- 

 united parts of the Mullerian ducts form the Fallopian tubes, 



