1689829
Description
Quiz by أطباء 2020, updated more than 1 year ago
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Created by أطباء 2020
over 9 years ago
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Question 1
Question
In sterognosis, all of the following are true EXCEPT
Answer
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Highly educated sensation
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Mixed sensation
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needs previous experience and intact sensory association cortex
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intact in case of lesion in sensory cortex
Question 2
Question
the most specific synapse is
Answer
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Axosomatic
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Axoaxonic
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Axodendritic
Question 3
Question
Regarding fine touch
Answer
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Slowly adapting
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carried by Ab aferent
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Transmit through anterolateral system
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Poorly localized sensation perceived at the thalamus
Question 4
Question
Enkephalin blocks pain transmission by:-
Answer
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blocking the response of pain receptors to painful stimuli
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Slowing down transmission of pain impulses through synapses in the pain Pathway
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Inhibiting the response of the cerebral cortical somatic sensory area to pain Signals
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Blocking Ca ++ channels in the central terminals of pain sensory fibers
Question 5
Question
IPSP differs from EPSP in:-
Answer
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being of shorter duration
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being unable to summate spatially
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Moving the membrane potential away from threshold
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Depending upon opening of voltage Na + channels
Question 6
Question
Intermittent Claudications evoke:-
Answer
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Fast pain
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Visceral pain
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Deep pain
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Cutaneous hyperalgesia
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Colicky pain
Question 7
Question
Astereognosis:-
Answer
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indicates inability to localize the site of touch on the body surface
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Results from lesions of the secondary somatic sensory area
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Somatic Association area malfunction
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Results from loss of crude touch sensation
Question 8
Question
Presynaptic inhibition depends upon:-
Answer
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Augmented realease of neurotransmitter from presynaptic terminal
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Continued depolarization of presynaptic terminals
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GABA receptors in presynaptic terminals
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Opening of voltage-gated Ca ++ channels in presynaptic terminals
Question 9
Question
Synaptic fatigue is due to: -
Answer
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decreased synthesis of neurotransmitters
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Inability to release neurotransmitters by exocytosis
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Failure of action potentials to open voltage-gated Ca ++ channels in Presynaptic terminal
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Imbalance in between rates of synthesis and release of neurotransmitters
Question 10
Question
Reaction to pain includes all the following, except:-
Answer
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increased heart rate
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Depression
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Withdrawal reflexes
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Stoppage of impulse discharge from nociceptors in chronic painful conditions
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