Examlex
Which is not a neurotransmitter?
Potassium
A chemical element with symbol K and atomic number 19, essential for various bodily functions including neural activity and muscle contraction.
Cognitive Processes
Mental activities involved in acquiring, processing, and storing knowledge, such as perception, memory, and reasoning.
Beta-Endorphin
A peptide involved in the pain and stress responses of the body; it acts as a natural painkiller.
Neurotransmitter
A chemical substance released at the end of a nerve fiber by the arrival of a nerve impulse, facilitating the transmission of impulses across a synapse.
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