There are only two ways to increase the magnitude of the momentum. Increase the magnitude of the velocity or increase mass.
Answer:
Electric signals --> Nervous System
Chemical Signals --> Endocrine System
Nervous system made up of neurons
Neurons send messages using action potentials
Neurons pick up signal as its dendrites pass the signal down the axon into the axon terminals and into the synapses
Synapse drops neurotransmitters into the synaptic cleft
This signals neuron #2 to pass the message on
Hope that helps!!
Explanation: