Psychiatric Disorders Quiz

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Questions and Answers

What characterizes schizophrenia as a psychiatric disorder?

  • Only physical symptoms without mental impairment
  • Disturbances in thought, perception, and behavior (correct)
  • Fluctuating energy levels and fatigue
  • Severe mood swings and manic episodes

What is a significant environmental factor associated with the etiology of schizophrenia?

  • High levels of physical activity during youth
  • Low socioeconomic status
  • Family history of mental health disorders
  • Prenatal exposure to maternal stress (correct)

Which neurotransmitter is primarily linked to the dopamine theory related to schizophrenia?

  • Serotonin
  • Norepinephrine
  • Dopamine (correct)
  • Acetylcholine

What structural brain alteration is commonly associated with schizophrenia?

<p>Enlargement of ventricles (D)</p> Signup and view all the answers

What percentage of individuals with schizophrenia are likely to have substance use disorders as a comorbidity?

<p>40-50% (B)</p> Signup and view all the answers

What is a common consideration when prescribing antipsychotics during pregnancy?

<p>They may increase the risk of developmental issues. (B)</p> Signup and view all the answers

Which class of medications is primarily used to treat mood disorders?

<p>Antidepressants (A), Mood Stabilizers (C)</p> Signup and view all the answers

What distinguishes Second-Generation Antipsychotics from First-Generation Antipsychotics?

<p>They have a different mechanism of action. (C)</p> Signup and view all the answers

Which of the following is NOT a type of antidepressant?

<p>Mood Stabilizers (A)</p> Signup and view all the answers

Which condition might require specific consideration regarding medications?

<p>Nitsan Syndrome (C)</p> Signup and view all the answers

Which of the following is classified as a mood disorder?

<p>Bipolar Disorder (C)</p> Signup and view all the answers

Which disorder is specifically characterized by recurring panic attacks?

<p>Panic Disorder (B)</p> Signup and view all the answers

What is a common feature of Obsessive Compulsive Disorder?

<p>Intrusive thoughts followed by compulsive behaviors (B)</p> Signup and view all the answers

Which disorder involves experiencing flashbacks or severe anxiety after a traumatic event?

<p>Post Traumatic Stress Disorder (C)</p> Signup and view all the answers

Which of the following disorders is not categorized under anxiety disorders?

<p>Major Depressive Disorder (B)</p> Signup and view all the answers

What part of the neuron is responsible for receiving messages from other cells?

<p>Dendrites (A)</p> Signup and view all the answers

At what membrane potential does a neuron typically fire an action potential?

<p>-55mV (B)</p> Signup and view all the answers

Which neurotransmitter is primarily associated with stimulating a neuron towards an action potential?

<p>Glutamate (B)</p> Signup and view all the answers

What occurs to neurotransmitters after they bind to receptors on the postsynaptic neuron?

<p>They are either reuptaken or enzymatically degraded. (D)</p> Signup and view all the answers

Which factor is NOT involved in the etiology of Bipolar Disorder?

<p>Environmental toxins (D)</p> Signup and view all the answers

What is one common symptom of Major Depressive Disorder?

<p>Anhedonia (C)</p> Signup and view all the answers

What is a characteristic feature of neuroplasticity?

<p>It refers to the brain's ability to change throughout life. (A)</p> Signup and view all the answers

Which treatment is NOT commonly associated with the management of Major Depressive Disorder?

<p>Dietary supplements (B)</p> Signup and view all the answers

During action potentials, which ion channels open first when depolarization occurs?

<p>Sodium (Na+) (A)</p> Signup and view all the answers

What best describes the cell body (soma) of a neuron?

<p>Contains the nucleus (A)</p> Signup and view all the answers

What role does acetylcholine (ACh) play in the body?

<p>Muscle movement and memory (B)</p> Signup and view all the answers

Which neurotransmitter is primarily associated with reward and pleasure?

<p>Dopamine (C)</p> Signup and view all the answers

What effect does GABA typically have in the central nervous system?

<p>Inhibitory (C)</p> Signup and view all the answers

Which clinical example is associated with decreased acetylcholine levels?

<p>Alzheimer's disease (A)</p> Signup and view all the answers

What is a common clinical example related to serotonin abnormalities?

<p>Depressive symptoms (D)</p> Signup and view all the answers

Which neurotransmitter's dysfunction is linked to the pathophysiology of schizophrenia?

<p>Glutamate (D)</p> Signup and view all the answers

What is the primary role of norepinephrine (NE) in the nervous system?

<p>Alertness and arousal (D)</p> Signup and view all the answers

Which neurotransmitter is primarily involved in excitatory functions in the brain?

<p>Glutamate (A)</p> Signup and view all the answers

Which condition is associated with excess dopamine activity?

<p>Hallucinations and delusions (A)</p> Signup and view all the answers

Which of the following is a common effect of medications like benzodiazepines?

<p>Reduction of anxiety (A)</p> Signup and view all the answers

Flashcards

Mood Disorders

Mental illnesses affecting a person's emotional state.

Major Depressive Disorder

A mood disorder marked by persistent sadness and loss of interest.

Bipolar Disorder

A mood disorder characterized by extreme shifts in mood and energy.

Anxiety Disorders

Mental illnesses involving excessive fear and worry.

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Generalized Anxiety Disorder (GAD)

Chronic worry and anxiety about everyday things.

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Schizophrenia: Definition

A chronic mental illness impacting thoughts, perceptions, and behaviour in individuals.

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Schizophrenia: Genetic Risk

Strong genetic predisposition; increased risk with family history, particularly with a affected parent, up to 50% in both parents.

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Schizophrenia: Prenatal Stressors

Prenatal factors contributing. Examples include maternal stress and infections.

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Schizophrenia: Dopamine Theory

A theory that suggests an imbalance in dopamine levels is a possible cause of schizophrenia symptoms.

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Schizophrenia: Neuroanatomical Changes

Brain changes occur in schizophrenia, including ventricle enlargement and reduced gray matter; particularly in temporal and frontal lobes

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Neuron function

Neurons transmit signals/impulses to other nerve cells.

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Action Potential Trigger

When depolarization reaches -55mV, neuron fires an action potential.

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Synapse function

Synapses are gaps between neurons; impulses transmit across them through chemical/electrical signals.

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Neurotransmitter Release

Action potential causes neurotransmitter release into the synaptic cleft from vesicles in a presynaptic neuron.

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Neurotransmitter Action

Neurotransmitters bind to receptors on the postsynaptic neuron, triggering changes (e.g., opening ion channels).

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Excitatory Neurotransmitter

Stimulates a neuron towards an action potential.

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Inhibitory Neurotransmitter

Reduces the probability of an action potential.

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Neuroplasticity

Changes in neural connections throughout life, including learning and recovery from damage.

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Major Depressive Disorder (MDD)

Mood disorder featuring loss of interest, sleep problems, and fatigue.

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Acetylcholine (ACh) function

A neurotransmitter involved in muscle movement, memory, learning, and autonomic functions.

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Dopamine (DA) role

Plays a role in reward, movement, and mood regulation.

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Serotonin (5-HT) effect

Affects mood, sleep, and digestion.

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Norepinephrine (NE) role

Influences alertness, arousal, and mood.

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GABA's effect

Reduces anxiety and promotes relaxation.

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Glutamate's function

A key excitatory neurotransmitter, important for learning and memory.

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Schizophrenia

A chronic psychiatric disorder.

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Neurotransmitters

Chemical messengers that transmit signals across synapses in the nervous system

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First-Generation Antipsychotics (FGA)

Older type of antipsychotic medications used to treat psychosis, primarily targeting dopamine receptors.

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Second-Generation Antipsychotics (SGA)

Newer type of antipsychotics with a wider range of action, often targeting both dopamine and serotonin receptors.

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Antidepressants

Medications used to treat depression and other mood disorders by affecting neurotransmitters like serotonin and norepinephrine.

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Mood Stabilizers

Medications used to manage mood swings in bipolar disorder, helping even out highs and lows.

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Nitsan Syndrome

A rare but serious condition that can occur in infants exposed to certain medications during pregnancy, especially selective serotonin reuptake inhibitors (SSRIs). It can cause respiratory distress, fever, muscle rigidity, and feeding difficulties.

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