UJiiii 



Mm 



c s c s 



Fig. 3.6. Secretion from a submaxillary gland of a cat. Chloralose anaesthesia. 



Records from above: rate of secretion; time in minutes; signal. Left tracing: C, chorda stimu- 

 lated; middle tracing: S, sympathetic stimulated; right tracing: C, chorda stimulated throughout, 

 S, sympathetic stimulated between vertical lines (Emmelin, 1955a). 



Fig. 3.7. Submaxillary secretion and blood flow in a cat, both recorded 

 using ordinate recorders. 

 Records from above: blood pressure; secretion; time in minutes; signal; blood flow through 

 the gland. First section: sympathetic stimulation for 1 minute. Throughout the whole second 

 section the chorda was stimulated to cause maximal secretion, and between the two marks ot the 

 signal the sympathetic was stimulated as well. Third section, starting 20 minutes 1 after intravenous 

 injection of 5 mg kg priscol, shows effect of sympathetic stimulation. Fourth section repeats 

 section two (at the end of the sympathetic stimulation period the chorda stimulation was discon- 

 tinued for some seconds by mistake). Section five: sympathetic stimulation (Emmelin, IQ55«). 



57 



