266 THE VISCERA. 
the free border of the broad ligament. Its mucosa is thrown 
into irregular folds, mostly longitudinal, and is lined by ciliated 
epithelium. From the foregoing description it is seen that the 
ova must pass through the body cavity in order to reach the 
ostium tube. , 
The Uterus (f, t).—The uterus consists of a median por- 
tion or body (2) which is unpaired, and of two horns or cornua 
(7) which extend from the body to the uterine tubes. The 
body (2) of the uterus is a tube about four centimeters long 
which lies in the abdominal cavity, ventrad of the rectum and 
between it and the bladder. Its caudal end is at the level of 
the cranial border of the pubis. The cranial end of its cavity 
is divided by a median dorsoventral partition into lateral halves, 
while the cavity of its caudal portion is unpaired. The mucosa 
is thrown up into large longitudinal folds. At its caudal end 
the uterus projects into the vagina (7), so that when the vagina 
is opened the end of the uterus is seen projecting into it asa 
prominent papilla. The portion of the uterus thus enclosed by 
the vagina is the cervix uteri or neck of the uterus. Its free 
end is directed ventrocaudad, and a prominent ridge is continued 
from its caudodorsal side along the mid-dorsal wall of the 
vagina. The uterine cavity communicates with the vaginal 
cavity by a V-shaped opening, the os uteri, which looks ven- 
trocaudad and has its apex directed cranioventrad. Each horn 
(/) of the uterus passes craniolaterad in a nearly straight course 
from the body (z) to the uterine tube (¢). It narrows rapidly 
and becomes continuous with the tube. The mucosa is thrown 
into longitudinal folds. 
Ligaments of the Uterus._-The Broad Lizament. —The 
uterus is held in place principally by the broad ligaments. 
These are two folds of the peritoneum, each cf which is attached 
to the whole length of one of the cornua and the adjacent part 
of the uterine tube and to the corresponding lateral surface of 
the body of the uterus. Each ligament ends craniad in a con- 
cave free border. Its attached border forms a curved line 
which begins laterad of the kidney and extends thence to the 
lateral ligament of the bladder. From the lateral ligament of 
the bladder the broad ligament extends caudad into the recto- 
