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49 Cards in this Set
- Front
- Back
Chemical agent affecting living processes is known as a
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drug
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The action of drugs on the normal body is known as
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pharmacology
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The action of drugs on the CNS, mood and behaviours is known as
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psychopharmacology
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Biological abnormalities that results in mental illness can be derived from ______ and/or _______ abnormalities.
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anatomical or neurochemical
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What are fives sources of abnormalities that may interact to cause mental illness?
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1. genetic
2. developmental 3. trauma/stress 4. infection 5. drugs |
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What are three types of monoamines implicated in mental illness?
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1. dopamine
2. norepinephrine 3. serotonin |
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What is the main amino acid implicated in mental illness?
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GABA
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GABA stands for
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gamma-aminobutyric acid
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Mental illness can result from _____ between genetic and environmental factors.
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interaction
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What are the two basic ways that drugs can interfere with neurotransmission?
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1. pre-synaptic mechanisms
2. post-synaptic mechanism |
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What are the seven presynaptic mechanisms that if affected by drugs can alter the transmission of neural messages?
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1. Synthesis of transmitters
2. Axonal Transport 3. Conduction of axon potential 4. Storage of transmitters in vesicles 5. Release of synaptic transmitters 6. Modulation of transmitter release by presynaptic receptors 7. Inactivitaion of transmitter reuptake. |
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What are the five postsynaptic mechanism that if affected by drugs can alter the transmission of neural messages?
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1. Inactivation of transmitter
2. Alteration of the number of postsynaptic mechanisms 3. Blockade of receptors 4. Activation of receptors 5. Activation of second messengers |
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Affect is the medical term for
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emotional state or mood
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Affective disorders, also know as mood disorders, are characterised by
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disordered emotions
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Depression is characterised by a feeling that one's emotional state is
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no longer under ones control
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If left untreated depression can last from ___ to ___ _____.
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4 - 12 months
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A diagnosis of Major Depression requires the symptoms of lowered mood and decreased interest in pleasure in all activities to be present
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every day for a period of at least 2 weeks.
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Mania is a dinstinct period of abnormally and persistently elevated , expansive or irritable _____.
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mood
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Type 1 bipolar is characterised by
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manic episodes
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Type 2 bipolar is characterised by ______ and is always associated with episodes of ____ ____
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hypomania
major depression |
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HPA stands for
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hypothalamic-pituitory-adrenal
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Disruption of the ___ system has been implicated as playing an important role in depression.
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HPA
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According to the monamine hypothesis of mood disorders suggests that depression is a result of a deficit in levels of released monoamine neurotransmitters ____ and _____
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NE - Norepinephrine
5HT - Serotonin |
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The Diathesis-Stress Hypothesis suggests that the ____ _____ is the main site where genetic and environmental influences converge to cause mood disorders.
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HPA axis
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What are the 4 known treatment for affective disorders?
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1. ECT
2. Psychotherapy 3. Antidepressants 4. Lithium |
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ECT stands fro
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Electroconvulsive therapy
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ECT disrupts _____
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memory
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Although the neural mechanisms of _____ remain unknown it has been shown to be helpful in relieving symptoms for mild to moderate depression.
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psychotherapy
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What are the 4 categories of antidepressants?
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1. tricyclic
2. SSRI's 3. NE SRI's 4. MOA inhibitors |
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All antidepressants elevate the levels of ______ transmitters in the brain however they take ____ to develop.
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monoamine
weeks |
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Tricyclic compounds block the reuptake of ____ and _____
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5HT and NE
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SSRI's block the reuptake of ___
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5HT
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NE SRI's block the reuptake of
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___
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MAO inhibitors reduce the enzymatic degradation of ___ and ____
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5HT and NE
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Prolonged treatment of SSRI's increases _______
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neurogenesis
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Receptors are protein molecules that initiate processes in the _______ cell when neurotransmitters or drugs bind to them.
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Postsynaptic
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____ are drugs that bind to post-synaptic receptor and initiate intra-cellular changes and prevent neurotransmitter access to receptors.
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agonists
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_____ are drugs that bind to post-synaptic receptors but do not initiate intracellular changes and prevent neurotransmitter access to receptors.
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antagonists
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An agonist ______ the channel however antagonist _____ the receptor effectively ____ _____ _____ ______ _____.
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opens
blocks prevents the channel from opening |
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Schizophrenia is characterised by a loss of contact with _____, and a _____ of thought , perception, mood and movement.
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reality
disruption |
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What are the four positive symptoms of schizophrenia?
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1. delusions
2. hallucinations 3. disorganised speech 4. grossly disorganised or catatonic behaviour |
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What are the four negative symptoms of schizophrenia?
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1. reduced expression of emotion
2. poverty of speech 3. difficulty in maintaining goal-directed behaviour 4. memory impairment |
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Schizophrenia is heritable and faulty genes seem to make some people .....
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more vulnerable to environmental factors that cause schizophrenia
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Receptors have slightly different structures depending on
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where they are in the brain
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The brand name for diazepam is
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valium
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The diathesis-stress model of schizophrenia suggests that schizophrenia =
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level of genetic predisposition + level of environmental stress
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Neuroleptics sued to treat _____ such as _______ act on the ___ receptors, decrease +ve symptoms but the side effects resemble parkinsons disease.
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schizophrenia
chlorpromazine D2 |
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According tot he dopamine hypothesis of schizophrenia, psychotic episodes are triggered specifically by the activation of ______ receptors.
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dopamine
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According to the glutamate hypothesis of schizophrenia the disorder reflects diminsished activation of ____ receptors in the brain
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NMDA
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