What are presynaptic neurons?

A presynaptic neuron is like the boss who sends messages to another person in a game.

Imagine you and your friend are playing a message-passing game. You're standing at one end of the playground, and your friend is at the other end. When you want to tell them something, you shout across the playground. That shouting, that’s how a presynaptic neuron works.

The presynaptic neuron is like the person who shouts. Inside its body, it makes little packages of messages called neurotransmitters, which are like tiny pieces of paper you write notes on. When it wants to send a message, it sends those little packets across a small gap, kind of like throwing your note into the air so your friend can catch it.

Without the presynaptic neuron shouting, your friend might never get the message. That’s how our brains talk to each other, one neuron shouts, and another listens!