Mitochondrion. 2. Synaptic vesicle with neurotransmitters. 3. Autoreceptor. 4. Synapse with neurotransmitter released (serotonin). 5.Postsynaptic receptors activated by neurotransmitter (induction of a postsynaptic potential). 6. Calcium channel. 7. Exocytosis of a vesicle. 8. Recaptured neurotransmitter.<unk> s (also called synaptic boutons,<unk>  boutons, or end-feet) are distal<unk> ions of the telodendria (branches) of an<unk> . An<unk> , 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. Neurons are interconnected in complex arrangements, and use electrochemical signals and neurotransmitter chemicals to transmit impulses from one neuron to the next;<unk> s are separated from neighboring neurons by a small gap called a synapse, across which impulses are sent. The<unk> , and the neuron from which it comes, is sometimes referred to as the "presynaptic" neuron.
Axon terminal
Neuromere
Specific granule
Voxelotor
Lines of Zahn
Nuclear bag fiber
Basal dendrite
Droplet nucleus