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A Fatal Shooting Occurs in a Busy City Centre on a Friday

question 23

Multiple Choice

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?


Definitions:

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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