THE STOMACH. 



281 



§ 732. Corpusciila Pacini, az. — Pacinian corpuscles. — These are 

 oval bodies about 2 mm. long and 1 mm. thick. They are between 

 the layers of mesentery, and may be demonstrated, in lean cats, by 

 lifting the mesentery and looking tlirougli it toward the light. They 

 appear as translucent thickenings of the form and size mentioned 

 above. 



§ 733. Microscopic Structure. — (A) A connective tissue envelope. (B) Many concen- 

 trically arranged layers of translucent connective tissue. (C) A. semifluid, richly nucleated, 

 central mass. (D) The termination of a single meduUated nerve fiber. (E) A capillary 

 network of blood vessels. Strieker, A, 179 ; Quain, A, II, 150. 



Fig. 79. — Stomach and Duodenum, Ventral View ; x 1. 



§ 734. Diaphragma, az. — Diaphragm (Fig. 90, § 712). — Draw 

 the stomach and liver somewhat caudad, and witli a sharp scalpel 

 perforate the diaphragm, provided the thorax was not opened to 

 make the injection. This will allow the air to enter the thorax, and 

 the stomach, etc., maybe kept in view. The diaphragm is fully 

 considered in § 816. 



Preparation — Fig. 79. — The cat was fed a moderate amount of 

 solid food about an hour before death. After death, the stomach 



