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Biopsychology Quick Quiz
Terms in this set (38)
Loss of blood flow to a region
*Most damage caused by excitotoxicity
Excessive release of glutamate poisons neurons through NMDA receptor
Blockage by a clot, fat, or oil
Blockage passes from larger vessel into a smaller vessel
Narrowing of vessels
Paralysis of one side of the body
Weakness in one side of the body
What percent of people who recover from a stroke will experience a second stroke within 5 years?
3 methods of treating stroke patients?
-Administer drugs that dissolve blood clots
-Neuroprotectants to prevent secondary injury
Name 2 drugs that dissolve blood clots:
tPA ( tissue plasminogen activator)
DISPA = anti-coagulant made by vampire bats
How many neuroprotectant drugs are FDA approved?
Many are in clinical trials, but none are FDA approved yet.
3 examples of neuroprotectant drugs:
Arteriorvenous malformation (AVM)
A tangle of abnormal blood vessels connecting arteries and veins in the brain.
Autonomic Dysfunction Syndrome
(Increased body temperature, Hypertension, Rapid Breathing)
What are the leading causes of TBI?
20% Motor-Vehicle Crashes
19% Struck by/ against events
Where do brain tumors mostly arise from?
Glial Cells (Glioma)
Cells of the meninges (Meningioma)
Focal / Partial Seizure
restricted to an epileptic "focus"
Simple Partial Seizure
Primarily sensory or motor
Complex Partial Seizure
Alterations in consciousness
No originating focal point
Tonic phase (loss of breathing/ muscle contraction)
Clonic phase (violent contractions)
Coma (5 min)
Brief period of conscious unawareness
4 principle symptoms of Parkinson's Disease
2. Resting Tremor
4. Postural Instability
drug that results in Parkinson-like symptoms
What causes Parkinson's Disease?
Loss of dopamine neurons in the substanstia nigra
*Disinhibition "inhibiting the inhibitor"
net effect= excitation
Is Huntington's Disease inherited?
Gene on chromosome 4 codes for protein called HTT
At what age do Huntington's Disease symptoms develop?
35 years old
What is Huntington's Disease characterized by?
Involuntary movements (chorea)
Biological effects of Huntington's Disease?
Destruction of GABA and Acetylcholine neurons in the basal ganglia
What are the positive symptoms of Schizophrenia?
=symptoms not normally observed in healthy individuals
Disorders of thought
What are the negative symptoms of Schizophrenia?
=abilities that healthy individuals have, but are lost in Schizophrenia patients.
Flattened emotional response
Poverty of speech
Lack of initiative and persistence
Which chromosomes have been associated with Schizophrenia?
Chromosomes 6 and 13
What is the concordance rate of Schizophrenia in identical twins?
What is the concordance rate of Schizophrenia in fraternal twins?
*Prolonged use= Parkinson's-like symptoms
depletes dopamine from brain
*Prolonged use= Parkinson's-like symptom
The Dopamine Hypothesis
The Dopamine Hypothesis of Schizophrenia
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