1689829
Descripción
Test por أطباء 2020, actualizado hace más de 1 año
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Creado por أطباء 2020
hace más de 9 años
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Pregunta 1
Pregunta
In sterognosis, all of the following are true EXCEPT
Respuesta
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Highly educated sensation
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Mixed sensation
-
needs previous experience and intact sensory association cortex
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intact in case of lesion in sensory cortex
Pregunta 2
Pregunta
the most specific synapse is
Respuesta
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Axosomatic
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Axoaxonic
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Axodendritic
Pregunta 3
Pregunta
Regarding fine touch
Respuesta
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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
Pregunta 4
Pregunta
Enkephalin blocks pain transmission by:-
Respuesta
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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
Pregunta 5
Pregunta
IPSP differs from EPSP in:-
Respuesta
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being of shorter duration
-
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
Pregunta 6
Pregunta
Intermittent Claudications evoke:-
Respuesta
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Fast pain
-
Visceral pain
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Deep pain
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Cutaneous hyperalgesia
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Colicky pain
Pregunta 7
Pregunta
Astereognosis:-
Respuesta
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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
Pregunta 8
Pregunta
Presynaptic inhibition depends upon:-
Respuesta
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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
Pregunta 9
Pregunta
Synaptic fatigue is due to: -
Respuesta
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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
Pregunta 10
Pregunta
Reaction to pain includes all the following, except:-
Respuesta
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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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