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Nervous system (Drugs that affect the brain: (Alcohol, Cocaine, Opioids,…
Nervous system
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Neurotransmitters: A chemical that is released at the end of a nerve fiber by the arrival of a nerve impulse and, when diffused through the synapse or junction, causes the transfer of the impulse to another nerve fiber, a muscle fiber or some other structure.
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Action Potential: An action potential is a rapid increase and subsequent voltage or membrane potential drop across a cell membrane with a characteristic pattern. Sufficient current is required to initiate a voltage response in a cell membrane; If the current is insufficient to depolarize the membrane to the threshold level, an action potential will not be triggered.
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