88S 



A MANUAL OF ANATOMY 



Interior of the Uterus. — The interior is divided into two portions 

 — the cavity of the body and the cavity of the cervix. The cavity 

 of the body is very small compared with the thickness of the uterine 

 walls, and is triangular, with the base directed upwards towards 

 the fundus. Its three sides are convex towards the cavity, and 

 its anterior and posterior walls are in contact. In the vicinity of 

 each superior angle it narrows, and gradually tapers to the ostium 

 uterinum of the Fallopian tube, with the lumen of which it is 

 continuous. Inferiorly the cavity also becomes narrow, and, at the 

 junction of the body and cervix, it ends in a circular opening, 



Fundus 



Cavity of Body of Uterus 



Ligament 

 Ovary of 



Cavity of Cervix 



Os Uteri Externum 

 (Anterior Lip) 



Fallopian Tube 



Parovarium 



Ostium 



Abdominale 



^ '- ^ ""''' Hydatid of 

 ^5^^^S=^ ^^orgagni 



1 Round Ligament of Uterus 



Broad Ligament 



Anterior Fornix 



Os Uteri Externum 



..Posterior Fornix 



Fig. 373. — ^The Uterus and its Appendages. 



A, The Uterus opened, and the Right Broad Ligament (Posterior View) ; 

 B, The Os Uteri Externum. 



called the os uteri internum, which is smaller than the os externum. 

 Through this opening it becomes continuous with the cavity of 

 the cervix. The cavity of the cervix is spindle-shaped, being wider 

 at the centre than at either end. It is somewhat flattened from 

 before backwards, and is continuous above with the cavity of the 

 body through the os internum, and below with the cavity of the 

 vagina through the os externum. Its mucous membrane presents 

 two longitudinal ridges, anterior and posterior, from each of which 

 a number of rugae extend in an upward and outward direction, the 

 appearance thus produced being known as the arbor vita uterina, 

 or piiccB palfnata:. 



