VISCERAL ANATOMY. I23 



Mucous.— V{3i?> flattened epithelium and is thrown into numerous 

 and marked folds. 



Blood Supply. — External carotid, bronchial and aesophageal. 

 Nerve Supply. — Tenth. 



ABDOMINAL CAVITY. 



The abdomen is that part of the great cavity of the trunk be- 

 hind the diaphragm. It is bounded above by the lumbar and 

 sacral vertebrae, laterally and below by the abdominal muscles, 

 behind by the pelvic brim. 



Regions. 



{a) Superior or sub-lmnbar, under the psoas muscles and 

 lumbar vertebrae. 



{b) Inferior, from xiphoid cartilage to pubes, and includes 

 recti muscles laterally. It is divided from before, backward, into 

 the supra-ster7ial, umbilical and pi'e-pubic regions. 



(r) Inguijial, about inguinal canals. 



{d) Lateral, from ribs to pelvis, and superior border of small 

 oblique to outer border of rectus. The hypochondriuin is that 

 part behind the costal free borders. The flank is that part cov- 

 ered by the internal oblique. 



(<?) Diaphragmatic is the space included in the concavity of 

 the diaphragm. 



(/) Pelvic, bounded above by sacrum, below by pubes, ischium, 

 and obturator internus, laterally by the os innominati and sacro- 

 ischiastic ligaments. Behind are placed the rectum and genito- 

 urinary organs. 



STOMACH. 



The stomach is a muscular organ, situated in the diaphragmatic 

 region, in whose cavity the principal acts of digestion take place. 

 Its capacity is 3 to 3^ gallons, its weight 3 or 4 pounds. In form 

 it is elongated, often constricted in the middle, and presents an 

 anterior and postei'ior face, a great curvature below, to which is 

 attached the great omentum, a lesser curvatui'e, to which is at- 

 tached the gastro-hepatic omentum ; a left dilatation, ihe fundus^ 



