1 70 RESPIRATION 



and inspiratory fibers already noticed, the vagus supplies the 

 lungs with broncho-motor, general sensory, trophic and secre- 

 tory (mucous) fibers. The sympathetic furnishes trophic and 

 vaso-motor fibers, which latter come from the cord by the roots 

 of the dorsal nerves mentioned to join the sympathetic ganglia. 



