Axons transmit signals to other neurons by means of specialized junctions called synapses. A single axon may make as many as several thousand synaptic connections with other cells. When an action potential, traveling along an axon, arrives at a synapse, it causes a chemical called a neurotransmitter to be released. The neurotransmitter binds to <answer>receptor molecules</answer> in the membrane of the target cell.
The neurotansmitter binds to what of a target cell?
receptor molecules