. - e ‘6 : ‘ nantes ; 
ip PRONG 2 5 Dat 
vs 
- - 
the stomach to the anus; is so called. They are divided into small 
and large. The smail are, the second stomach, which begins at the 
lower orifice of the stomach, and is reflected over the spine, under 
the lining membrane. It is about twelve fingers breadth in length, 
and has near its middle an oblique perforation, which is the common 
opening to the pancreatic duct, and the biliary ducts. The empty, 
composes the second portion, and the fwisted, the remainder, of 
the small intestines. They always hang from the mesentary into the 
cavity of the pelvis. There is no alteration of structure in any part 
of the small intestines ; the termination of the one and beginning of 
the other is imaginary. The empty part constitutes the first half 
from the ‘second stomach, the other half is the twisted part. The _ 
small intestines have internally a number of annular folds, which 
augment the surface for the situatio n of the milk and other vessels. 
They are peculiar to the intestines. a 
The large intestines are divided into the blind gui, colon, and 
straight gut, or rectum. ‘The blind gut lies upon the right hip over 
the internal flank muscle, to which it is attached by cellular mem- 
brane: it is alarge blind sac, open at one end only ; the small intes- 
tine opens obliquely into it, in such a manner as to forma valve, to 
impede the return of the feces; and nearly opposite to this valve 
there arises from the. blind gut a small worm-like canal, imperforate 
at its extremity, called the appendix of the blind gut. The intes- 
tine, is now called colon z it-ascends towards the liver, and is called - 
the ascending portion of the colon, and having reached the liver, 
forms a transverse arch across to the other side. Te colon then de- 
scends into the pelvis, where the gut is termed the rectum, or straight 
gut, which terminates in the anus. eam B 
The large intestines are lobulated, have sometimes little fat portions 
adhering to them, and also three bands upon. their external surface, 
lengthwise. ‘I'he intestines are composed of three membranes, or 
coats; one common, a muscular, and the third villous, or shaggy. They 
are connected with the mesentery, kidneys, point bone, and urinary 
bladder ; and in women with the vagina. ‘Cheir arteries are branches 
of the upper and lower. mesenteric, duodenal, and internal pile arte- 
ries; veins run into the mesenteric. ‘Their nerves are productions _ 
of the eighth pair, and rib nerves. Milk vessels. These arise from 
the small intestines, and run into the mesenteric glands. Glanc a 
mucus, and under the villous coat. _ Use, to receive the chy 
Preelleitriat Sh a: Sc gaa : 
retaim it for a time; to mix it with the intestinal juice and bile: to— 
séparate and propel the chyle into the milk vessels; and to eliminate 
the fC es | : 
CHYLIFICATIOY. 
t duct, to be sent into 
eae ag 
