THE URINARY SYSTEM 



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703. The Urethra (Plate XVIIL, P and Plate XLL, A 5) is a 

 canal or passage which runs from the neck of the bladder to the 

 anterior end of the penis. The urine passes through it, and it also 

 acts as a passage for the transmission of the seminal fluid during the 

 act of copulation. 



704. The Inguinal Canals are the short passages between 

 the abdominal cavity and the scrotum, and through them the vas 

 deferens, bloodvessels, and nerves pass. 



705. The Scrotum is the purse or sac which holds the testes, and 

 is placed between the thighs, and is made up of a series of layers of 

 integument. 



706. The Sheath is situated in front of the scrotum, and is a 

 loose fold of skin investing the front and free portion of the penis, 

 and having its anterior end open. 



FEMALE ORGANS OF GENERATION. 



707. The Female Organs of Generation consist of the ovaries 

 — right and left ; the two Fallopian tubes ; the uterus, or womb ; 

 and the vagina, or passage communicating externally with the 

 vulva. 



708. The Ovaries (Plate XLL, B 1,1) are situated behind the 

 kidneys in the sublumbar region of the abdomen, and are in con- 

 nexion with the fimbriated or free ends of the Fallopian tubes. They 

 are analogous to the testicles of the male, as in them is formed the 

 ovum or egg, which is the essential reproductive element of the 

 female. 



709. The Fallopian Tubes (Plate XLL, B 2, 2).— These canals 

 run in an irregular manner from the uterus to the ovaries. Their 

 anterior extremities are fringed and free, and their function is to 

 seize and carry the ovum, or egg, to the womb. 



710. The Uterus, or Womb (Plate XLL, B 3), is a musculo- 

 membranous structure, lying partly in the abdominal and partly in 



