X PRACTICAL DIRECTIONS 531 



kidney backwards to the bladder, which, if contracted, may be inflated 

 from the urinogenital aperture. Then make out— 

 .4. Ill the male. 



1. The /««?>, with the prepuce, ^xA the aperture of the unnogenital 

 canal, which latter is lined by the soft corpus spongiosum, and strength- 

 ened dorsally by the corpora cavernosa, which diverge proximally and 

 are attached to the ischia. 



2. The scrotal sacs, each communicating with the abdominal cavity by 

 the inguinal canal, through which the corresponding spermiduct and 

 the spermatic artery and vein pass to the spermary, to see which and 

 the epididymis the scrotal sac should be slit open along its ventral wall. 



3. The course of the spermiducts. 

 B. In the female. 



1. The vulva; and the clitoris, with its corpora cavernosa, on the 

 ventral wall of the urinogenital canal. 



2. The vagina, uteri, and Fallopian tubes with their funnels. 



3. The ovaries, studded with ovisacs. 



IX. Dissect away the kidneys, ureters — and in the male the scrotal 

 sacs, in the female the ovaries — from the surroimding parts : cut through 

 the pelvic symphysis with a knife, and sever the attachment of the 

 corpora cavernosa to the ischia. Remove the whole of the urino- 

 genital organs, together with the posterior end of the rectum, from the 

 body, and after noting § VII, 3 and 4, pin them out in a dissecting-dish, 

 with the ventral side uppermost, taking care to preserve the natural 

 relations of the parts. Dissect away all the superfluous connective 

 tissue and fat, separate the rectum at its cut end from the urinogenital 

 canal, and turn it on one side, noting the rectal and perineal glands. 

 Make out, in addition to the parts referred to in § VIII : — 



A. In the male. The titerus masculinus&nA prostate, and the spermi- 

 ducts passing between the former and the bladder. 



Sketch the entire dissection. Then slit open the uterus masculinus so 

 as to see the openings of the spermiducts, remove the rectum and rectal 

 glands, and make out the relations of the corpus spongiosum. Make a 

 median incision along the whole length of the penis, beginning at the 

 apex and cutting through the fibrous septum betweeen the two corpora 

 cavernosa : continue the incision forwards, so as to open the bladder 

 along its ventral wall, and note and indicate on your sketch the opening 

 of the ureters into the bladder, and the crescentic aperture of the uterus 

 masculinus into the urinogenital canal, just at the anterior edge of a 

 cushion-like fold. 



M M 2 



