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Chemical Synapse

Definition

A chemical synapse is a type of synapse that uses neurotransmitters, which are chemical messengers, to transmit signals from one neuron (nerve cell) to another.

Analogy

Think of a chemical synapse like the postal service. The sending neuron is like the post office, packaging up messages (neurotransmitters) and sending them out. The synaptic cleft (the gap between neurons) is like the distance the mail has to travel, and the receiving neuron is like your mailbox, ready to receive the message.

Related terms

Neurotransmitter: These are endogenous chemicals that enable neurotransmission. They transmit signals across a synapse from one neuron (nerve cell) to another 'target' neuron.

Synaptic Cleft: This is a gap between two nerve cells which forms a junction for transmission of nerve impulses through release of neurotransmitters.

Receptor Site: This refers to specific areas on dendrites or neurons designed to receive specific neurotransmitters. It's similar to how only certain keys can open certain locks.