The terminals release transmitter substances into a gap called the synaptic cleft between the terminals and the dendrites of the next neuron. The axonal terminals are specialized to release the neurotransmitters of the presynaptic cell. Neurotransmitters are packaged into synaptic vesicles that cluster beneath the axon terminal membrane on the presynaptic side of a synapse. The axon terminal, and the neuron from which it comes, is sometimes referred to as the "presynaptic" neuron. Neurons are interconnected in complex arrangements, and use electrochemical signals and neurotransmitter chemicals to transmit impulses from one neuron to the next axon terminals are separated from neighboring neurons by a small gap called a synapse, across which impulses are sent. An axon, also called a nerve fiber, is a long, slender projection of a nerve cell, or neuron, that conducts electrical impulses called action potentials away from the neuron's cell body, or soma, in order to transmit those impulses to other neurons, muscle cells or glands. Recaptured neurotransmitter.Īxon terminals (also called synaptic boutons, terminal boutons, or end-feet) are distal terminations of the telodendria (branches) of an axon. 5.Postsynaptic receptors activated by neurotransmitter (induction of a postsynaptic potential).
Synapse with neurotransmitter released ( serotonin). Activity at an axon terminal: Neuron A is transmitting a signal at the axon terminal to neuron B (receiving).
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