USAHS Neuroscience Exam 2
Left MCA superior division infarct - Answer- right face and arm weakness of the upper motor neuron
broca's aphasia
Left MCA inferior division infarct - Answer- fluent, or wernkickes, aphasia
right visual field deficit right face and arm cortical type sensory loss
Left and right MCA superior division - Answer- both have cortico type sensory loss
left will be on right and vice versa
Left MCA deep territory - Answer- Right pure motor hemiparesis of the upper motor neuron type. Larger infarcts may produce "cortical" deficits, such as aphasia as well
Left MCA stem - Answer- Combination of the above, with right hemiplegia, right hemianesthesia, right homonymous hemianopia, and global aphasia. There is often a left gaze preference, especially at the onset, caused by damage to left hemisphere cortical areas important for driving the eyes to the right.
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:
Left MCA superior division infarct - Answer- right face and arm weakness of the upper motor neuron
broca's aphasia
Left MCA inferior division infarct - Answer- fluent, or wernkickes, aphasia
right visual field deficit right face and arm cortical type sensory loss
Left and right MCA superior division - Answer- both have cortico type sensory loss
left will be on right and vice versa
Left MCA deep territory - Answer- Right pure motor hemiparesis of the upper motor neuron type. Larger infarcts may produce "cortical" deficits, such as aphasia as well
Left MCA stem - Answer- Combination of the above, with right hemiplegia, right hemianesthesia, right homonymous hemianopia, and global aphasia. There is often a left gaze preference, especially at the onset, caused by damage to left hemisphere cortical areas important for driving the eyes to the right.
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:
