Other experiments allowed him to  distinguish sensory from motor nerves, establish that urine was  made in the kidneys, and deduce that respiration was  controlled by muscles and nerves.
In anderen Experimenten unterschied er Sinnes- von Bewegungsnerven; er wies nach, dass Urin in den Nieren entsteht, und folgerte, dass die Atmung von Muskeln und Nerven gesteuert wird.