CHAPTER XX. 



GENERATION AND DEVELOPMENT. 



THE several organs and functions of the human body which have been 

 considered in the previous chapters, have relation to the individual be- 

 ing. We have now to consider those organs and functions which are des- 

 tined for the propagation of the species. These comprise the several pro- 

 visions made for the formation, impregnation, and development of the 

 ovum, from which the embryo or foetus is produced and gradually per- 

 fected into a fully-formed human being. 



The organs in the two sexes concerned in effecting these objects are 

 named the Generative organs, or Sexual apparatus. 



GENERATIVE ORGANS OF THE FEMALE. 



The female organs of generation (Fig. 392) consist of two Ovaries, 

 whose function is the formation of ova; of a Fallopian tube, or oviduct, 



FIG. 392. Diagrammatic view of the uterus and its appendages, as seen from behind. The uterus 

 and upper part of the vagina have been laid open by removing the posterior wall; the Fallopian tube, 

 round ligament, and ovarian ligament have been cut short, and the broad ligament removed on the 

 left side ; w, the upper part of the uterus ; c, the cervix opposite the os internurn ; the triangular 

 shape of the uterine cavity is shown, and the dilatation of the cervical cavity with the rugae termed 

 arbor vitae; v, upper part of the vagina; od, Fallopian tube or oviduct; the narrow communication 

 of its cavity witn that of the cornu of the uterus on each side is seen; Z, round ligament; to, ligament 

 of the ovary; o, ovary; z, wide outer part of the right Fallopian tube; fi, its fimbriated extremity; 

 po, parovarium; A, one of the hydatids frequently found connected with the broad ligament. . 

 (Allen Thomson.) 



connected with each ovary, for the purpose of conducting the ovum from 

 the ovary to the Uterus, or cavity in which, if impregnated, it is retained 

 until the embryo is fully developed, and fitted to maintain its existence in- 



