How does a synapse fire

At a synapse, one neuron sends a message to a target neuron—another cell. ...

At a chemical synapse, an action potential triggers the presynaptic neuron to release neurotransmitters.

These molecules bind to receptors on the postsynaptic cell and make it more or less likely to fire an action potential.

The answer would be interphase.

I’m not exactly sure what your trying to ask, but if it’s how an organelle is similar to a body system or a part a nucleus is like a in function. but i don’t fully understand what you’re trying to ask