Neurotransmitter

Definition

A neurotransmitter is a chemical substance produced in the body that transmits nerve impulses across synapses between neurons.

Analogy

Think of neurotransmitters as mail carriers. They deliver messages (nerve impulses) from one house (neuron) to another, ensuring communication between different parts of town (the nervous system).

Related terms

Receptor: This is a protein molecule that receives and responds to neurotransmitters; it's like the mailbox where our 'mail carrier' delivers its message.

Synaptic Cleft: The small gap between two neurons into which neurotransmitters are released; this can be thought of as the street our 'mail carrier' must cross to deliver their message.

Dopamine: This is an example of a specific neurotransmitter, known for its role in reward and pleasure systems in humans. Imagine dopamine as a special delivery package filled with joy!