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Why are the standard heats of formation for elements in their most stable form assigned a value of "0"?
Interneurons
A type of neuron that transmits impulses between other neurons, especially as part of a reflex arc.
Sympathetic Nervous System
A part of the autonomic nervous system that prepares the body for action by increasing heart rate, blood pressure, and energy production.
Opiatelike Neurotransmitters
Substances in the brain that act on the same receptors as opiates, playing key roles in pain relief and pleasure.
Endorphins
Neurochemicals produced in the brain that act as natural painkillers and also boost feelings of pleasure or well-being.
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