Examlex
A fatal shooting occurs in a busy city centre on a Friday afternoon.Thirty police officers are deployed to the city centre to locate the suspected shooter.Dispatch sends a photo to each officer's handheld device (e.g.,iPhone,Google Nexus) .What does this exemplify?
Ligand-Gated
Referring to ion channels that open in response to the binding of a chemical messenger (ligand), such as a neurotransmitter.
Acetylcholine
A neurotransmitter involved in many functions including muscle movement, heart rate, and the modulation of brain activity.
GABA
Gamma-Aminobutyric Acid, an inhibitory neurotransmitter in the central nervous system that plays a key role in reducing neuronal excitability throughout the nervous system.
Receptor Downregulation
A decrease in the number of receptors on the surface of target cells, often in response to high levels of a hormone or neurotransmitter.
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