Examlex
The term ____________ is defined as anything that has weight and takes up space.
Serotonin
A neurotransmitter in the brain that affects mood, emotion, and sleep, playing a key role in preventing depression and regulating anxiety.
Dopamine
A neurotransmitter in the brain that plays a key role in reward, motivation, memory, and attention, and is often associated with the pleasure and reward system.
Therapeutic Half-life
The time required for the concentration of a drug in the body to decrease to half of its starting dose, which is crucial in determining the drug's dosage and scheduling.
Elimination Half-life
The time it takes for the concentration of a substance in the blood to be reduced by half, an important measure in pharmacokinetics.
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