. An American text-book of obstetrics. For practitioners and students. ; gf, genital folds ; ug, urinogenital fissure : per, perineum ;a, anus ; pc, prepuce of clitoris ; , labia majora ; , labia minora : !, vestibule ; rag, vagina. penile portion of the urethra; coincidently, the closure of the edges of theurinogenital passage takes place, the tube thus formed becoming continuouswith the anterior part of the urethra just formed. The primitive genitalridges or outer genital folds grow together and eventually form the scrotum,into which the testicles descend shortly before birth. In t
. An American text-book of obstetrics. For practitioners and students. ; gf, genital folds ; ug, urinogenital fissure : per, perineum ;a, anus ; pc, prepuce of clitoris ; , labia majora ; , labia minora : !, vestibule ; rag, vagina. penile portion of the urethra; coincidently, the closure of the edges of theurinogenital passage takes place, the tube thus formed becoming continuouswith the anterior part of the urethra just formed. The primitive genitalridges or outer genital folds grow together and eventually form the scrotum,into which the testicles descend shortly before birth. In the female (Fig. 115, D, f, h) the genital tubercle remains relatively small PHYSIOLOGY OF PREGNANCY. 125 and becomes the clitoris ; the genital furrow remains open, the bounding genitalfolds forming the labia minora or the nyrnphse, and the external folds formingthe labia majora. At first the clitoris is disproportionately large, but later itbecomes overshadowed by the rapidly growing labia. Usually, by the end of Medullaryfurrow. Uncle/tEctoderm. mesoderm. Visceralmesoderm. Notochord. Somite. Gut entoderm. Fig. 116.—Transverse section of a sixteen and a half day sheep embryo possessing six somites (Bonnet). the third month the external sexual characteristics of the fetus are establishedbeyond doubt. Imperfect development, especially faulty union, of certainparts of the primitive genitalia produce the conditions which give rise to ap-parent hermaphroditism : true hermaphrodites, while not impossibilities, are Ectoderm Closing-neural canal.
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectobstetrics, bookyear1
