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BASIC SCIENCES IN PSYCHIATRY QUIZ I

DR SADGUN BHANDARI  CONSULTANT PSYCHIATRIST  QUEEN ELIZABETH II HOSPITAL  WELWYN GARDEN CITY  HERTFORDSHIRE 


BASIC SCIENCES IN PSYCHIATRY

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QUIZ I

1. Oxytocin A. Is synthesized in the suprachiasmatic nucleus B. Causes milk ejection C. Relaxes the uterus D. Is a large polypeptide E. Is released directly into the circulation from its site of production


BASIC SCIENCES IN PSYCHIATRY 

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QUIZ I

2. Nerve Impulse Transmission A. In myelinated fibres is slower than in unmyelinated fibres B. Conduction velocity is directly proportional to the diameter of the conducting fibres C. Excitatory neurotransmitters hyperpolarize the nerve cell membrane D. Is saltatory in unmyelinated nerves E. Opening of potassium channels results in depolarization of the nerve cell membrane


BASIC SCIENCES IN PSYCHIATRY 

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QUIZ I

3. Which of the following neurotransmitters is most important for the induction of REM sleep? A. Acetylcholine B. Dopamine C. Adrenaline D. Noradrenaline E. Serotonin


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QUIZ I

4. What percentage of the volume of the human brain is occupied by myelinated axons? A. 1% B. 45% C. 10% D. 20% E. 80%


BASIC SCIENCES IN PSYCHIATRY 

5. A man is unable to wash the left side of his body and denies that his left arm belongs to him even though he clearly visualizes it. Examination reveals that the patient's somatosensory system is intact. These findings indicate that the patient may have a lesion in the:

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QUIZ I

A. Globus pallidus. B. Left anterior caudate. C. Left sensorimotor cortex. D. Right orbital frontal cortex. E. Right parietal cortex.


BASIC SCIENCES IN PSYCHIATRY

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QUIZ I

6. The histological features found in the brains of patients with Alzheimer’s disease are: A. Ischemic neurons, gliosis and reparative changes B. Demyelination of white matter C. Spongiform changes of the cerebral cortex D. Neurofibrillary tangles, neuritic amyloid plaques, and amyloid angiopathy E. Normal histology


BASIC SCIENCES IN PSYCHIATRY

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QUIZ I

7. The morphologic findings patients with Wernicke’s encephalopathy include which of the following: A. Hemorrhagic necrosis of mamillary bodies B. Global cerebral atrophy C. Loss of pigment in the substantia nigra D. Hydrocephalus, obliterative endarteritis and gliosis. E. Frontal and temporal lobe atrophy


BASIC SCIENCES IN PSYCHIATRY 

8. The following cerebral lobes are most affected by Pick's disease?

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QUIZ I

A. Temporal and frontal. B. Parietal and occipital. C. Parietal and temporal. D. Occipital and temporal. E. Occipital and frontal


BASIC SCIENCES IN PSYCHIATRY 

9. Rapid eye movement (REM) sleep is characterized by:

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QUIZ I

A. Sleep spindles of 14 Hz. B. Increased regularity of heartbeat. C. Exaggerated parasympathetic responses. D. Increased tone in antigravity muscles. E. Phasic twitches in somatic musculature.


BASIC SCIENCES IN PSYCHIATRY

QUIZ I

9. An EEG that reveals posterior alpha and anterior beta activity is most likely to have been obtained from:

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A. A sleeping adult. B. A 1-year-old infant. C. A relaxed adult with eyes open. D. A relaxed adult with eyes closed. E. An adult performing intense mental activity with eyes closed


BASIC SCIENCES IN PSYCHIATRY QUIZ I