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Nitric oxide functions as a neurotransmitter, despite being a gas. It is not grouped with the other neurotransmitters because it is not released in the same way. Endocannabinoids act in the endocannabinoid system to control neurotransmitter release in a host of neuronal tissues, including the hippocampus, amygdala, basal ganglia, and cerebellum.
Neurotransmitters are essential to the function of complex neural systems. The exact number of unique neurotransmitters in humans is unknown, but more than 100 have been identified. [ 3 ] Common neurotransmitters include glutamate , GABA , acetylcholine , glycine , dopamine and norepinephrine .
A neurotransmitter is a type of molecule that carries signals between neurons (nerve cells) at synapses in the nervous system The main article for this category is Neurotransmitters . Wikimedia Commons has media related to Neurotransmitters .
Monoamine neurotransmitters are neurotransmitters and neuromodulators that contain one amino group connected to an aromatic ring by a two-carbon chain (such as -CH 2-CH 2-). Examples are dopamine , norepinephrine and serotonin .
The neurotransmitter binds to receptor molecules in the membrane of the target cell. [8] Synapses are the key functional elements of the brain. [11] The essential function of the brain is cell-to-cell communication, and synapses are the points at which communication occurs.
An amino acid neurotransmitter is an amino acid which is able to transmit a nerve message across a synapse. Neurotransmitters (chemicals) are packaged into vesicles that cluster beneath the axon terminal membrane on the presynaptic side of a synapse in a process called endocytosis .
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Neurotransmission is regulated by several different factors: the availability and rate-of-synthesis of the neurotransmitter, the release of that neurotransmitter, the baseline activity of the postsynaptic cell, the number of available postsynaptic receptors for the neurotransmitter to bind to, and the subsequent removal or deactivation of the ...