Examlex
The size groups within the standard classification of soil particle sizes are termed ________.
Acetylcholine
Acetylcholine is a neurotransmitter in both the central and peripheral nervous systems, involved in muscle activation, learning, and memory.
Nicotine
An addictive chemical found in tobacco products that stimulates the brain and enhances feelings of pleasure and arousal.
Monoamine
A category of neurotransmitter that includes serotonin, dopamine, and norepinephrine, which play key roles in regulating mood, arousal, and cognition.
Acetylcholine
A neurotransmitter important for brain and muscle function, involved in arousal, attention, memory, and motivation.
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