Home ยป Chemicals called ________ are stored in neurons and released when the cell is stimulated by a signal Nervous System MCQs Chemicals called ________ are stored in neurons and released when the cell is stimulated by a signal September 22, 2022 10 Views Q. Chemicals called ________ are stored in neurons and released when the cell is stimulated by a signal. toxinscytokineschemokinesneurotransmitters Answer: neurotransmitters