Examlex
Which of the following is NOT considered a behaviour placing people at high risk of HIV infection?
Norepinephrine
A neurotransmitter and hormone that is involved in the body's stress response and helps regulate attention, alertness, and arousal.
Level Of Alertness
The degree of vigilance, awareness, and readiness to respond to changes or stimuli in one's environment.
Neurotransmitters
Chemical substances that transmit signals across a synapse from one neuron to another, influencing various functions in the body and brain.
Synaptic Gap
The tiny space between neurons across which neurotransmitters travel to transmit signals from one neuron to another.
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