We factor in the number of neurons involved and the distance the signal has to travel

We must also factor in the number of neurons involved and the distance the signal has to travel.Let see what this looks like in a simple pathway your knee-jerk reflex.A strike to your patellar tendon triggers an electrical impulse that travels up a sensory neuron to your spine.There the signal branches, and for the sake of simplicity,wel consider the segment that jumps into a motor neuron to journey back down your leg.The total length of the neurons in that pathway is about 1 meter in someone who is 5 foot 5 inches,and on average it takes 15 to 30 milliseconds from strike to kick.