294 PRACTICAL ANATOMY. 



The Ovarian Artery and the Sympathetic Nerve. This artery you will 

 see shining through the peritoneum, passing behind the ureter, opposite the 

 bifurcation of the aorta. You will remember its origin from the aorta, below 

 the renal, and its homologue, the spermatic. Trace it down in this manner : Lift 

 the peritoneum up, over the artery, and cut the same with the scissors. Make 

 everj' effort not to disturb the artery in its bed. Trace the artery now to the 

 lateral space, between the two folds of broad ligament (Fig. 202), to its distribu- 

 tion and anastomosis, as shown in figure 204. You will find the uterine artery 

 embedded in the side of the uterus, between the two folds of the broad ligament. 

 Find the artery, and trace it out to its origin from the internal iliac artery. (Fig. 

 204.) You will find an abundant supply of sympathetic nerves forming the uterine 

 plexus. Figure 203 gives a frontal section of the uterus, which you may now 

 imitate. In the angle of the uterus find the opening for the Fallopian tube. 

 Locate the os internum and externum. Figure 206 is a sagittal section. Cut 

 through the vagina and study the utero-vaginal junction. 



Remember the analysis of the pelvic plexus. Formed : (i) by prolongation 

 of the hypogastric plexus ; (2) by branches from the second, third, and fourth 



CAVITY OF BODY 



REFLEXION OF PERITONEUM 



CAVITY OF CERVIX 



POSTERIOR FORNIX ^ | [ ^ ANTERIOR Ll p 



POSTERIOR LIP- _ _ 



. ANTERIOR FORNIX 



OS EXTERNUM 



FIG. 206. SAGITTAL SKCTION OF THE VIRGIN UTERUS. (After Sappey.) 



sacral nerves ; (3) by branches from the two upper sacral ganglia. Located : By 

 the side of the rectum, vagina, and uterus in the female. Distribution : To all the 

 viscera in the pelvis. The nerves accompany the branches of the internal iliac 

 artery. The nerves proceed from a plexus on the artery ; the plexus proceeds 

 from a ganglion ; the ganglion is supported by the pelvic plexus ; the pelvic plexus 

 is in communication with the hypogastric plexus through a prolongation of this 

 latter. 



I . Xainc tlic ligaments of the uterus you hare tluis far found, and explain 

 their derivation. 



(i) The round ligament; (2) one in front, called the anterior or vesico- 

 uterine ; (3) one posterior, the recto-uterine ; (4) two sacro-uterine ; (5) two 

 broad ligaments. The round ligament that in your dissection you traced 

 through the inguinal canal, is lost in the labia majora ; it is homologous to the 

 spermatic cord. It is composed of fibrous and muscular tissue from the uterus. 

 The cord is attended by a hood of peritoneum called the canal of Nuck. To see 



