USAHS NEUROSCIENCE EXAM #2
QUESTIONS WITH CORRECT
ANSWERS
Right MCA superior division infarct - ANSWER -left face and arm weakness of the
upper motor neuron type
left hemineglect is present
Right MCA inferior division infarct - ANSWER -profound left hemineglect
left visual field and somatosensory deficits are often present
Right MCA deep territory - ANSWER -Left pure motor hemiparesis of the upper motor
neuron type
Right MCA stem - ANSWER -Combination of the above, with left hemiplegia, left
hemianesthesia, left homonymous hemianopia, and profound left hemineglect.
There is usually a right gaze preference,
especially at the onset, caused by damage to right hemisphere cortical areas important
for driving the eyes to the left.
Left ACA - ANSWER -Right leg weakness of the upper motor neuron type and right leg
cortical-type sensory loss.
Grasp reflex, frontal lobe behavioral abnormalities, and transcortical aphasia can also
be seen. Larger infarcts may cause right hemiplegia
Right ACA - ANSWER -Left leg weakness of the upper motor neuron type and left leg
cortical-type sensory loss.
Grasp reflex, frontal lobe behavioral abnormalities, and left hemineglect can also be
seen. Larger infarcts may cause left hemiplegia.
Left PCA - ANSWER -Right homonymous hemianopia
Right PCA - ANSWER -Left homonymous hemianopia
MCA superior division - ANSWER -left side:
affects right side of body
brocas aphasia
cortical type sensory loss (pain, temperature, fine
, touch, stereognosis, graphesthesia)
right side:
affects left side of body
left hemineglect
MCA inferior division - ANSWER -left side:
wernkickes aphasia-problem understanding language, r visual field deficit, r face and
arm cortico type sensory loss, motor finding absent
right side:
profound left hemineglect (unable to regcognize left leg), left visual field, and
somatosensory deficit, issues in understanding and comprehension and denial
MCA deep territory - ANSWER -contains the internal capsule filled with white matter
from the lateral corticospinal tract
left: right pure motor hemiparesis
right: left pure motor hemiparesis (paralysis of half body)
MCA stem - ANSWER -left:
-combo of above, right homonymous hemianopia (vision occluded from right side of
both eyes)
-global aphasia
right:
-combo of above, left homonymous hemianopia (visual occluded from left side of both
eyes)
-profound left hemineglect
Meninges - ANSWER -dura mater
arachnoid mater
pia mater
epidural space-menignle layer - ANSWER -between skull and dura
contains middle meningeal artery
epidural hematoma- can be from temporal bone fracture
subdural space - ANSWER -between dura mater and arachnoid mater
subdural hematoma- common in elderly; rupture in bridging veins
contains bridging veins
QUESTIONS WITH CORRECT
ANSWERS
Right MCA superior division infarct - ANSWER -left face and arm weakness of the
upper motor neuron type
left hemineglect is present
Right MCA inferior division infarct - ANSWER -profound left hemineglect
left visual field and somatosensory deficits are often present
Right MCA deep territory - ANSWER -Left pure motor hemiparesis of the upper motor
neuron type
Right MCA stem - ANSWER -Combination of the above, with left hemiplegia, left
hemianesthesia, left homonymous hemianopia, and profound left hemineglect.
There is usually a right gaze preference,
especially at the onset, caused by damage to right hemisphere cortical areas important
for driving the eyes to the left.
Left ACA - ANSWER -Right leg weakness of the upper motor neuron type and right leg
cortical-type sensory loss.
Grasp reflex, frontal lobe behavioral abnormalities, and transcortical aphasia can also
be seen. Larger infarcts may cause right hemiplegia
Right ACA - ANSWER -Left leg weakness of the upper motor neuron type and left leg
cortical-type sensory loss.
Grasp reflex, frontal lobe behavioral abnormalities, and left hemineglect can also be
seen. Larger infarcts may cause left hemiplegia.
Left PCA - ANSWER -Right homonymous hemianopia
Right PCA - ANSWER -Left homonymous hemianopia
MCA superior division - ANSWER -left side:
affects right side of body
brocas aphasia
cortical type sensory loss (pain, temperature, fine
, touch, stereognosis, graphesthesia)
right side:
affects left side of body
left hemineglect
MCA inferior division - ANSWER -left side:
wernkickes aphasia-problem understanding language, r visual field deficit, r face and
arm cortico type sensory loss, motor finding absent
right side:
profound left hemineglect (unable to regcognize left leg), left visual field, and
somatosensory deficit, issues in understanding and comprehension and denial
MCA deep territory - ANSWER -contains the internal capsule filled with white matter
from the lateral corticospinal tract
left: right pure motor hemiparesis
right: left pure motor hemiparesis (paralysis of half body)
MCA stem - ANSWER -left:
-combo of above, right homonymous hemianopia (vision occluded from right side of
both eyes)
-global aphasia
right:
-combo of above, left homonymous hemianopia (visual occluded from left side of both
eyes)
-profound left hemineglect
Meninges - ANSWER -dura mater
arachnoid mater
pia mater
epidural space-menignle layer - ANSWER -between skull and dura
contains middle meningeal artery
epidural hematoma- can be from temporal bone fracture
subdural space - ANSWER -between dura mater and arachnoid mater
subdural hematoma- common in elderly; rupture in bridging veins
contains bridging veins
