Diagram of Internal Differentiation
| A. primitive urogenital organs in the embryo previous to sexual distinction. | B. female type of sexual organs. | C. male type of sexual organs. |
| 3. Ureter | Ureter | Ureter |
| 4. Urinary bladder | Urinary bladder | Urinary bladder |
| 5. Urachus | Urachus | Urachus |
| i. Lower part of the intestine | i. Lower part of the intestine | i. Lower part of the intestine |
| cl. Cloaca | ||
| cp. Elevation which becomes clitoris or penis (genital tubercle) | cc. Corpus cavernosum clitoridis | cp. Corpora cavernosa penis cut short |
| ug. Sinus urogenitalis | C. Greater vestibular gland, and immediately above it the urethra | C. Bulbo-urethral gland of one side |
| f. The abdominal opening of the left uterine tube | ||
| g. Round ligament, corresponding to gubernaculum | g. The gubernaculum | |
| h. Situation of the hymen | ||
| ls. Labioscrotal folds | l. Labium major | s. Scrotum |
| n. Labium minus | ||
| m, m. Right and left Müllerian ducts uniting together and running with the Wolffian ducts in gc, the genital cord | m. Müllerian duct, the upper part of which remains as the hydatid of Morgagni; the lower part, represented by a dotted line descending to the prostatic utricle, constitutes the occasionally existing cornu and tube of the uterus masculinus | |
| ot. The genital ridge from which either the ovary or testis is formed. | o. The left ovary | t. Testis in the place of its original formation; t’, together with the dotted lines above, indicates the direction in which the testis and epididymis descend from the abdomen into the scrotum. |
| pr. The prostate | ||
| sc. Corpus cavernosum urethrae | sp. Corpus cavernosum urethrae | |
| u. Uterus. The uterine tube of the right side is marked m. | ||
| v. Vulva | ||
| va. Vagina | ||
| vh. Ductus aberrans | ||
| vs. The vesicula seminalis | ||
| W. Left Wolffian body | W. Scattered remains of the Wolffian body, constituting the organ of Giraldès, or the paradidymis of Waldeyer. | |
| w, w. Right and left Wolffian ducts | W. Scattered remains of Wolffian tubes near it (paroöphoron of Waldeyer); dG. Remains of the left Wolffian duct, such as give rise to the duct of Gärtner, represented by dotted lines; that of the right side is marked w. | |
| po. Epoophoron |
Read more about this topic: List Of Homologues Of The Human Reproductive System
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