Final answer:
An axoaxonic synapse is a specialized type of synapse that occurs between an axon terminal of one neuron and the axon of another neuron, which can modulate the amount of neurotransmitter released and the strength of the neural signal.
Step-by-step explanation:
The type of synapse that occurs between an axon terminal of one neuron and the axon from another neuron is known as an axoaxonic synapse. This is less common than the typical synapse between an axon terminal and a dendrite, called an axodendritic synapse, but it does occur in the nervous system.
Serving as a form of synaptic modulation, axoaxonic synapses can either increase or decrease the amount of neurotransmitter released from the axon terminal of the postsynaptic neuron, thus affecting the strength of signal transmission.