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Figs. 343-348. Stages in the development of the external genital organs. Kollmann's Atlas.

indifferent " stage embryo of 17 mm.; Fig. 344, " indifferent " stage embryo of 23 mm ; g. 345, " indifferent " stage embryo of 29 mm. (beginning of 3d month) ; Fig. 346, female embryo of 70 mm. (n weeks); Fig. 347, female embryo of 150 mm. (16 weeks); Fig. 348, male embryo of 145 mm. (16 weeks).
An., Anus; CL, clitoris; Clo.and gen. /., cloaca and genital folds; Cl. m., cloacal membrane; Ext. y lower extremity; Gen. /., genital folds; Gen. r., genital ridge; Gen. sw., genital swelling; Gen. tub., genital tubercle; Gl. p., glans penis; Lab. ma., labium majus; Lab. mi., labiura minus; Ra., raphe of scrotum; Scr., scrotum; Ta., tail; Ug. s., urogenital sinus; Umb. c, umbilical cord.

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Pages where the terms "Historic Textbook" and "Historic Embryology" appear on this site, and sections within pages where this disclaimer appears, indicate that the content and scientific understanding are specific to the time of publication. This means that while some scientific descriptions are still accurate, the terminology and interpretation of the developmental mechanisms reflect the understanding at the time of original publication and those of the preceding periods, these terms and interpretations may not reflect our current scientific understanding.     (More? Embryology History | Historic Embryology Papers)


Bailey FR. and Miller AM. Text-Book of Embryology (1921) New York: William Wood and Co.

Cite this page: Hill, M.A. (2019, July 23) Embryology Bailey347-348.jpg. Retrieved from

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