When nerve cells in the brain called _________communicate, they don't touch. The messages are sent from __________________________ neuron to the __________________________ neuron. They are sent through chemicals called __________________________ that attach to receptors on the branch-like structures called __________________________. These chemicals carry messages that are received and processed in the cell's nucleus and a decision for the occurrence of an all-or-nothing response called the ________________ is made. This all-or-nothing response travel through the _________________ in the form of an __________________________ . A fatty layer of insulation called ________________ allows for neuron communication to be faster because impulses jump in between the gaps they form. This activates the release of the chemical from vesicles at the end of the neuron called _____________________ into the space called the__________________________ If this neural process does not happen, neurons __________________________