Examlex
Which substance is known as "good" cholesterol because it carries excess cholesterol back to the liver?
Serotonin
A neurotransmitter in the brain that contributes to feelings of well-being and happiness.
All Or None Law
A principle stating that the strength of a response of a nerve cell or muscle fiber is not dependent on the strength of the stimulus.
Neuron
A nerve cell that is the basic building block of the nervous system, responsible for receiving, processing, and transmitting information through electrical and chemical signals.
Fires
Rapid oxidation processes that release heat, light, and various reaction products, usually visible as flames.
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