1078 DISSECTION OF THE LOWER LIMBS. 



meter of the urethra observed, as also in its prostatic part, the verumon- 

 tanum or caput gallinaginis, the sinus poculads, and the orifices of the 

 common ejaculatory ducts (p. 901). The junction of the vas deferens and 

 vesicula eeminalis to form the common ejaculatory duct is to be displayed ; 

 and a longitudinal section of the prostate gland may be made to show its 

 thickness, consistence, and structure : the relations of its base to the neck 

 of the bladder should be particularly observed, with the circle of veins of the 

 vesical plexus in the angle between them. 



In the female subject the bladder is to be opened and examined as in the 

 male, and the length and diameter of the urethra observed (p. 980). The 

 vagina is then to be cut open a little on one side of the middle line in front, 

 when the rugje of its mucous membrane will be seen ; also, at its entrance, 

 the carunculze myrtiformes, and, projecting into it above, the cervix uteri 

 (p. 981). The ovary with its ligament and mesovarium, the Fallopian tube, 

 the round ligament of the uterus, and, between the ovary and Fallopian 

 tube, the tubules termed parovarium or organ of Rosenmliller, are next to 

 be dissected, and the external configuration of the uterus examined (p. 982). 

 The student will then notice the position and appearance of the os uteri 

 externum, and will open the uterus on its anterior aspect by a line of 

 section which, by dividing into two superiorly, is prolonged to both of the 

 cornua (p. 984). He will thus see the size and shape of the triangular 

 cavity of the uterus, the cavity of the cervix, the rugce of its mucous mem- 

 brane, and the os uteri internum. 



10. The Pelvic Ligaments. At the conclusion, the articulations of the 

 pelvic bones may be examined, if they are still in a condition fit for dissec- 

 tion (p. 147). The symphysis pubis with its concentric laminae of fibro- 

 cartilage is first to be examined ; then the articulation of the pelvis with 

 the fifth lumbar vertebra, especially the sacro-vertebral and ilio-lumbar 

 ligaments : the great and small sacro-sciatic ligaments should be cleaned, 

 and, by removing the remains of the origin of the obturator interuus muscle, 

 the obturator membrane. 



The anterior and posterior ligaments and the intervertebral disc of the 

 sacro-coccygean articulation are to be observed : lastly, the strong posterior 

 and the thinner anterior sacro-iliac ligaments having been dissected, the 

 last mentioned is to be divided, and the cartilaginous surfaces of the sacro- 

 iliac synchondrosis are to be brought into view by forcing open the 

 articulation. 



V. LOWER LIMBS OR INFERIOR EXTREMITIES. 



The right and left limbs constitute each a part, the dissection of which 

 should extend over a period of not less than four weeks. It includes the 

 whole limb below Poupart's ligament and the crest of the ilium, but not 

 the perinseum. 



1. The Gluteal Region. The dissection of the gluteal region, the back 

 of the thigh, and the popliteal space is to be completed in the four days 

 during which the subject lies on its face. To remove the integument from 

 the buttock let an incision be carried along the crest of the ilium, brought 

 downwards in the middle line of the sacrum and curved outwards in the 

 fold of the nates, then directed obliquely to the outside of the thigh about 

 five or six inches below the great trochanter. The junior student will at 

 once proceed to clean the gluteus maxiinus muscle in the direction of its 

 fibres (p. 266). The senior student will examine the arrangement of the 



