SYSTEMATIC SYNTHESIS OF TISSUES INTO ORGANS. 353 



1073. THE USE OF THE PEOCESS TAKING PLACE IN 

 THE FIKST STOMACH is to dissolve the food and allow the 

 fat and starch to pass on into the Second Stomach ; to 

 set at liberty any sugar and gum the food contains, either 

 to pass into the blood-vessels of the stomach or to go 

 on into the second stomach ; to dissolve the gelatine, 

 and change it in some manner not yet understood ; to 

 liberate the albuminous portions of food, and change 

 them into albuminose, ready for nutritious purposes. 



1074. The distension of the Stomach by food, and 

 its contraction into a small space when empty, as well as 

 its motions, require that THE STOMACH SHOULD HAVE AN 

 EXTEENAL FEEE SUEFACE moving without friction against 

 surrounding parts. 



1075. THE EXTEENAL SUEFACE OF THE STOMACH is 

 serous membrane, pearl-colored, smooth, and moistened 

 with the glairy serum. 



1076. THE STOMACH is THEEEFOEE SAID TO BE CON- 

 STEUCTED of three coats, mucous, muscular, and serous ; 

 or it may be described as constructed of sinewy tissue, 

 differently wrought in different parts of its thickness, 

 with muscular fasciculi in the centre and blood-vessels, 

 lymphatics, and nerves throughout, lined with basement 

 membrane and mucous and gastric cells, and covered 

 with basement membrane and serous cells. 



1077. THE SEEOUS MEMBEANE OF THE STOMACH ex- 

 tends upward from each side of its smaller curvature to- 

 ward the liver, forming a ligament to sustain the stomach, 

 as seen at 4, Fig. 233, while at the larger curvature the se- 

 rous membrane from each side (5) extends down like an 

 apron (Omentum, caul) in front of the organs below, in 

 which omentum an abundance of fat is netted most beau- 

 tifully (see Fig. 234). It is used by butchers to improve 

 the appearance of their meat, that taken from a fat crea- 

 ture being spread upon the quarters of a lean one. 



1073. What is ? Write the uses in tabular form. 1074. Why should ? 

 1075. Describe . 1076. How is ? 1077. Trace . 



