Final answer:
The power of the brain comes from the cooperation of neurons in neural networks. Neurons communicate with each other through synapses where signals are transmitted using neurotransmitter molecules.
Step-by-step explanation:
The power of the brain arises from the cooperation of large numbers of neurons connected together into neural networks. Neurons communicate with each other through synapses, which are junctions between neurons where signals are transmitted. When an action potential reaches the end of an axon, it stimulates the release of neurotransmitter molecules into the synaptic cleft between the neurons. These neurotransmitter molecules bind to receptors in the post-synaptic membrane, allowing the signal to be transmitted to the next neuron.