1424 



THE URINOGEXITAL ORGANS 



AT 



FIG. 1181. Diagram of the primitive 

 urogenital organs in the embryo pre- 

 vious to sexual distinction. 3. Ureter. 

 4. Urinary bladder. 5. Urachus. cl. 

 Cloaca, cp. Elevation which becomes 

 clitoris or penis, i. Lower part of in- 

 testine. Is. Fold of integument from 

 which the labia majora or scrotum are 

 formed. m,m. Right and left Mtillerian 

 ducts uniting and running with the 

 Wolffian ducts in QC, the genital cord. 

 ot. The genital ridge from which either 

 the ovary or testicle is formed, un. 

 Sinus urogenitali. W. Left Wolffian 

 body. w, w. Right and left Wolffian 

 ducts. 



FIG. 1182. Diagram of the female 

 type of sexual organs. c. Gland of 

 Bartholin, and immediately above it 

 the urethra. cc. Corpus cavernosum 

 clitoridis. dG. Remains of the left 

 Wolffian duct, such as give rise to the 

 duct of Gartner, represented by dotted 

 lines; that of the right side is marked 

 u>. /. The abdominal opening of the 

 left Fallopian tube. g. Round liga- 

 ment corresponding to gubernaculum. 

 h. Situation of the hymen, i. Lower 

 part of the intestine. /. Labium. n. 

 Nympha. o. The left ovary. po. 

 Parovarium (epoophoron of Waldeyer). 

 sc. Vascular bulb or corpus spongiosum. 

 u. Uterus. The Fallopian tube of the 

 right side is marked TO. v. Vulva, ra. 

 Vagina. W. Scattered remains of 

 Wolffian tubes near it (paroophoron 

 of Waldeyer). 



FIG. 1183. Diagram of the male 

 type of sexual organs. C. Cowper's 

 gland of one side. cp. Corpora cav- 

 ernosa penis cut short, e. Caput epi- 

 didymis. g. The gubernaculum. i. 

 Lower part of the intestine. TO. Miil- 

 lerian duct, the upper part of which 

 remains as the hydatid of Morgagni; 

 the lower part, represented by a dotted 

 line descending to the prostatic vesicle, 

 constitutes the occasionally existing 

 cornu and tube of the uterus mascu- 

 linus. pr. The prostate gland. s. 

 Scrotum. sp. Corpus spongiosum 

 urethrae. t. Testicle in the place of 

 its original formation. t'. Together 

 with the dotted lines above, indicates 

 the direction in which the testicle and 

 epididymis descend from the abdomen 

 into the scrotum. vd. Vas deferens. 

 vh. Vas aberrans. vs. The vesicula 

 seminalis. W. Scattered remains of 

 the Wolffian body, constituting the 

 organ of Giraldes, or the paradidymis 

 of Waldeyer. 



FIGS. 1181 to 1183. Diagrams to show the development of the male and female generative organs from a 



common type. (Allen Thomson.) 



