SYSTEMATIC SYNTHESIS OF TISSUES INTO ORGANS. 347 



1045. THE CAPILLARIES of the membrane here are 

 very much increased in number, giving the beautiful 

 appearance of the blush of the peach to the inner surface 

 of the stomach when digestion is taking place. 



1046. BETWEEN THE PAPILLAE the minute mouths 

 of two kinds of glands ARE FOUND, one the mucous 

 gland of the stomach, the other the gastric glands. 



1047. THE GASTRIC GLANDS, almost FlG - 23 - 

 infinite in number, are exceedingly 



small, straight tubes of basement mem- 

 brane, lined with cells, as represented in 

 Fig. 230, the right-hand tube being 

 healthy and the other deranged. 



1048. THE CELLS OF THE GASTRIC 

 GLANDS are very rapidly produced at &" 

 the commencement of the digestive pro- 

 cess, and, charged with their important ai 

 contents, move out into the stomach, 

 dissolving there, or on their way, and 

 yielding the important digestory fluid ''' 

 to the food in the stomach. 



1049. THE FLUID SECRETED BY THE 



CELLS is called gastric juice, its most important compo- 

 nent having the name of pepsin. 



1050. UPON THE HEALTHFUL CHARACTERISTICS AND 



ABUNDANT FLOW OF THE GASTRIC JUICE depends, in a 

 great degree, the first process of digestion. 



1051. THE GASTRIC JUICE does not FLOW constantly, 

 but when required food is taken, or even thought of, if 

 very necessary, the juice starts and continues to flow 

 from a few minutes to half an hour, according to the ne- 

 cessities of the body and the quantity of food taken. 



1052. Remark. The gastric juice gushes freely, if much food is 

 required ; but if only a little food is taken, the juice soon ceases to flow, 

 while, if unnecessary food is eaten, the juice does not flow at all ; or, if 



1045. Describe . 1046. What ? 1047. What are ? 1048. What said of ? 

 1049. What of ? 1050. What depends ? 1051. When does ? 



