266 SEROUS SYSTEM. 



*ft. Serum, bloody serum, greenish serum, serum with 

 flakes, blood itself. 



Q. What is the autopsic demonstration in the serous 

 tissues after chronic inflammation? 



*fl. They are slightly thickened and swollen. 



Q. There is yet another pathological state of the serous 

 membranes. 



*ft. Yes. They are the seats of miliary eruption ; this is 

 especially true of the peritoneum. In these cases the mem- 

 brane is red, an$ the disease arises from repelled eruptions 

 and from cold. 



Q. What is the first pathological process in the course 

 of serous inflammation ? 



/?. It is to check the exhalation of serum. 



Q. What is the most frequent sympathetic disease of 

 the serous membranes? 



A. Dropsy; which arises either from the disease of the 

 organ invested with serous membranes, or from the debi- 

 lity of protracted organic disease, as consumption. The 

 last are passive exhalations of serum. 



Q. What serous membranes are most obnoxious to 

 symptomatic dropsies? 



. The peritoneum, the pleura, and the pericardium, 

 in the order in which they are named. 



Q. What are the diseases of the pleura ? 



A. Acute and chronic inflammation. 



Q. Why is acute pleurisy so frequent? 



A. This frequency is occasioned by proximity to the 

 lungs, which are so constantly exposed to the air ; another 

 cause, the susceptibility of the pleura to take on disease 

 from suppressed perspiration. 



Q. With what is pleurisy apt to be confounded? 



