ACTUAL QUESTIONS WITH VERIFIED
ANSWERS.
MRI (magnetic resonance imaging) - correct answer-a
technique that uses magnetic fields and radio waves to produce
computer-generated images of soft tissue. MRI scans show
brain anatomy.
variety of conditions, from torn ligaments to tumors. MRIs are
very useful for examining the brain and spinal cord
anatomical detail, old hemorrhage, tumor infarctions, brainstem
lesion
FLAIR
Fluid-attenuated inversion recovery - correct answer-An MRI
sequence with an inversion recovery set to null fluids.
For example, it can be used in brain imaging to suppress
cerebrospinal fluid (CSF) effects on the image, so as to bring
out the periventricular hyperintense lesions, such as multiple
sclerosis (MS) plaques.
,Single-photon emission computed tomography (SPECT) -
correct answer-It is a nuclear medicine procedure widely used
to study heart, liver, thyroid, bone and brain problems. Brain
SPECT imaging is a proven, reliable measure of cerebral blood
flow.
fMRI (functional MRI) - correct answer-A technique for
revealing bloodflow and, therefore, brain activity by comparing
successive MRI scans. fMRI scans show brain function.
frontal lobe function - correct answer-involved in motor function:
problem solving, memory, judgment, impulse control
Brodmann's Areas
Broca's Area: 44, 45
Primary Motor Cortex (precentral gyrus): 4
Broca's Area = expression of speech
Deficit = expressive aphasia (unable to express self)
parietal lobe function - correct answer-sensation and
proprioception
, Brodmann's Area
Primary Somatosensory Area (postcentral gyrus): 3, 12
Sensory Association Area (proprioception): 5, 7, 39, 40
(interprets sensory info "soft," "dull," "sharp")
Deficits = Gerstman's Syndrome - resulting from damage to the
angular gyrus of the dominant parietal lobe leading to agraphia,
acalculia, finger agnosia and left-right disorientation.
Apraxia (unable to plan the motor task) → motor planning
occipital lobe - correct answer-responsible for visual perception.
Damage to them results in loss of visual capability, an inability
to identify colors, and hallucinations. At times, patients
experience severe vision loss or total blindness.
temporal lobe - correct answer-A region of the cerebral cortex
responsible for hearing and language.
can lose speech if damaged
BDNF (Brain-derived neurotrophic factor) - correct answer-
gene provides instructions for making a protein found in the
brain and spinal cord. This protein promotes the survival of