20,0 HUMAN ANATOMY. 



in ds and form a superficial net-work beneath 



derable size within the inner muscular layer, emerge 



Ilim - an ,l form a dense plexus of thin-walled vessels that surround 



lesof the uterus between the layers ot the broad ligament. 



. upper, middle, and lower group. The first of these 



fundus and upper part of the body, which become , tnbu- 



-i,i the ovarian veins and leave the pelvis by way of the sii?- 



The middle group comprises the venous radicles from the lower 



Ul, ,:ul upper part ot the cervix that unite into one or two mam stems 



,h:, my the uterine artery. The lower group is formed by the veins from 



lht , ;lt ,,art ot the uterus, the anterior vaginal wall, and the posterior 



unite into robust ascending stems that become tribu- 



tollowing the uterine artery. The middle and lower groups freely 



.sith the \esiral plexus and also communicate with tne hemorrhoidal 



/Yinfihatics, within the mucosa not demonstrable as definite vessels but only 



as u . ^titute an intermuscular net-work of which the larger trunks 



f.,11, 1 establish communication between the cervical lymphatics 



On emerging from the myometrium a superficial ( subserous) 



v over the posterior surface in the vicinity of the lateral 



:-.l;s al>o accompany the blood-vessels along the sides of the uterus. 



lymphatics from the cervix, usually two or three stems, pass to the lymph-nodes 



occupying tl.- n the external and internal iliac arteries. According to 



i.ns, 1 tho>e from the remaining parts of the uterus follow different paths: one 



ly, goes likewise to the iliac nodes; another, from the fundus, 



courses towards tin- ovary, and in company with the trunks from the latter organ 



f.,11' varian artery to terminate in the lumbar nodes. A third set, also from 



fundus, eventually gains the lumbar glands after joining the lymphatics of the 



Fallopian tube, while a f.Hirth group diverges from the fundus along the round liga- 



ment to become afferent* of the inguinal lymph-nodes. In addition to free anasto- 



Miong themselves, the uterine lymphatics communicate with those of the 



vagina, rectum, ovaries. Fallopian tubes, and broad ligament. 



The nerves of the uterus, bring chiefly destined for the involuntary muscle, 



I of lar- correspond with the highly developed myome- 



trium. They at : not only from the sympathetic system from the utero- 



nal sub.'.: the pelvic plexus i the continuation from the hypogastric), but 



also directly from the secon:!, third, and fourth sacral spinal nerves. According to 



the classic description oi Frankcnhauser, the utero-vaginal plexus divides into two 



nailer of which is distributed to the posterior and lateral parts of the 



\\lule the larger includes a chain of minute ganglia along the cervix and 



nal vault. ( hie of thrse, the t rr:-i,-/ .;'<?;/;' /ion, is especially large, and lies behind 



na, receiving, in addition to the sympathetic, spinal fibres 



: giving off twigs to the uterus. "These latter pass to the 



"fii the I the bnud ligament, particularly at the sides in 



' !l h; ''I- Is, and penetrate tin- myometrium, to the fibre-cells of 



hietly distributed : others pass into the mucosa to end 



ili tin- c pitlielium. 



Development and Changes. In consequence of the medial rotation of the 



the \Volftun bodv, the relations of the Miillrrian to the Wolftian 



' King laterally to tl u - \Volttian duct, as it dors above, the 



the nine, side of that tube as they pass int.. the urogvnital fold 



the l.mer end of the \Yolrfian bodv into a median 



the gt-mtal cprd Within the latter, formed by the fusion of the 



vo Mullerian ducts lie ne.vt the mid-line, side by side and in 



Wolffian du.t on either hand. Beginning about the eighth week, 



rface* united, the intervening septum disappears and the two 



' 



, e nervenng septum sappears and te two 



Ctsarc ' ngi tub,- from which the uterus is derived. 



.iv i. An.it. u 1'liys, 



