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Addictions and the Family Study Guide

Casey Woods

Basal Ganglia Blocks the removal of dopamine from the synapse, so the brain receives constant messages of euphoria.
Nucleus Accumbens Contains the brain’s reward circuit. It links together a number of brain structures that control and regulate our ability to feel pleasure.
Thalamus A chronic, relapsing brain disease that is characterized by compulsive drug seeking and use, despite harmful consequences.
Ventral segmental area Located on the neuron that releases the neurotransmitters
Hippocampus Controls basic functions critical to life, such as heart rate, breathing, and sleeping.
Frontal Cortex Acts as a hub to relay sensory information and is also important in regulating arousal.
Amygdala Responsible for thoughts and actions. The orbitofrontal cortex is thought to play a part in controlling behaviour.
Alcohol, Opioids, and Cannabis  This region, which receives dopamine from the ventral segmental area, helps to control desire, satiety, and inhibition.
Amphetamines  Associated with memory and with emotions, notably anxiety and fear.
Nicotine Important for consolidation of memory.
Cocaine Directly stimulate transmission of dopamine.
Addiction Divided into areas that control specific functions. Different areas process information from our senses, enabling us to see, feel, hear, and taste.
Brain Stem Messages are typically carried between neurons by chemical called
Cerebral Cortex Suppress the action of GABA neurons and others that inhibit dopamine release.
Limbic System A primitive structure at the top of the brain stem in which dopamine is synthesized.
Neurotransmitters Neurotransmitter attaches to a specialized site on the receiving neuron called a
Receptors Seems to stimulate dopamine neurons
Transporters Interconnected regions that are involved in learning, reward, and habit formation.

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