Examlex
What is the study of interactions among species and their environments called?
Dopamine
A neurotransmitter in the brain that plays a key role in reward, motivation, and motor control.
Serotonin
A neurotransmitter within the brain that plays an important role in the regulation of emotion and motivation.
Bodily Humors
An ancient medical theory suggesting that the health and temperament of the human body are determined by a balance among four bodily fluids: blood, phlegm, black bile, and yellow bile.
Black Bile
Black bile, one of the four humors in ancient Greek medicine, was believed to be associated with melancholy and sadness, representing a historical understanding of bodily fluids affecting temperament.
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