Chemicals called ________ are stored in neurons and released when the cell is stimulated by a signal HomeNervous System MCQsChemicals called ________ are stored in neurons and released when the cell is stimulated by a signalNervous System MCQsQ. Chemicals called ________ are stored in neurons and released when the cell is stimulated by a signal.toxinscytokineschemokinesneurotransmittersAnswer: neurotransmitters