What Role Do Synapses Play in Neuronal Communication?
Synapses are crucial for neuronal communication. At a chemical synapse, an action potential reaching the presynaptic terminal triggers the release of neurotransmitters. These neurotransmitters cross the synaptic cleft and bind to receptors on the postsynaptic membrane, initiating a response in the postsynaptic neuron. This process can either be excitatory or inhibitory, depending on the type of neurotransmitter and receptor involved.
