Neuro 10: Brain hemisphere circulation

Question 1

Cerebral hemisphere anterior circulation comes from

Answer 1

Internal carotid

Question 2

Cerebral hemisphere posterior circulation comes from

Answer 2

Vertebral arteries

Question 3

Terminal branches of internal carotids

Answer 3

anterior cerebral arteries (ACAs)
middle cerebral arteries (MCAs)

Question 4

Putamen circulation source

Answer 4

ACA

Question 5

Caudate nucleus circulation source

Answer 5

MCA

Question 6

Thalmus circulation source

Answer 6

PCA

Question 7

Superior left MCA infarct signs

Answer 7

Upper motor neuron right face and arm weakness

Broca’s aphasia (has trouble getting words out)

Question 8

Inferior Left MCA infarct

Answer 8

Wernicke’s aphasia (forms sentences that makes no sense). Right visual field defect. Usually no motor findings

Question 9

Deep Left MCA infarct

Answer 9

Right upper motor neuron hemiparesis

Question 10

Left MCA Stem infarct

Answer 10

Right hemiplegia, right hemiamnesthesia, aphasia,

left gaze preference

Question 11

Right superior MCA infarct

Answer 11

Left face/arm weakness, left hemineglect

Question 12

Inferior Right MCA infarct

Answer 12

Profound left hemineglect.
Left visual field and somatosensory deficits

Question 13

Deep right MCA infarct

Answer 13

Left motor hemiparesis

Question 14

Right MCA stem infarct

Answer 14

Left hemiplegia, hemianesthesia, left hemineglect.

Right gaze preference.

Question 15

Left ACA infarct

Answer 15

Right leg UMN weakness. Right leg cortical sensory loss.

Grasp reflex maybe

Question 16

Right ACA infarct

Answer 16

Left leg UMN weakness. Left leg cortical sensory loss.

Grasp reflex maybe

Question 17

Left PCA infarct

Answer 17

Right homonymous hemianopia

Question 18

Right PCA infarct

Answer 18

Left homonumous hemianopia

Question 19

Gaze preference side

Answer 19

“looks towards lesion”

Question 20

ACA infarcts affect…

Answer 20

Contralateral leg more than arm or face

Question 21

Watershed infarct

Answer 21

Area between two arteries is most affected

Question 22

Man in barrel syndrome

Answer 22

Proximal arm and leg weakness as a result of watershed infarct of ACA and MCA

Question 23

Carotid stenosis causes _________

Answer 23

Watershed infarct of ACA-MCA

Question 24

TIA duration

Answer 24

Typically 10 min

Question 25

Hemmorhagic conversion

Answer 25

Ischemic stroke ruptures to become brain bleed

Question 26

Thrombotic vs embolic infarct

Answer 26

Thrombosis: forms clot on blood vessel Embolic: travels from elsewhere

Question 27

Lacunar infarct

Answer 27

Small vessel infarct resembling lake

Question 28

Lypohyalinosis

Answer 28

hypertension related changes in arterial walls

Question 29

Pure motor hemiparersis

Answer 29

UMN

Question 30

Ataxic hemiparesis

Answer 30

UMN hemiparesis with additional ataxia

Question 31

Large MCA infarct common complication

Answer 31

Edema and mass swelling.

Question 32

Carotid dissection signs

Answer 32

Patient may hear heartbeat and have ipsilateral Horner’s

Question 33

Vertebral artery dissection symptoms

Answer 33

Posterior neck and occipital pain

Question 34

Superficial veins drain into

Answer 34

superior sagital sinus

Question 35

Deep veins drain into

Answer 35

Vein of galen

Question 36

All venous drainage from brain goes to

Answer 36

Internal jugulars

Question 37

Sagittal sinus thrombosis S/s

Answer 37

Seizures, increased ICP, decreased LOC, headaches and papilledema

Question 38

Common subarachnoid hemmorhage locations

Answer 38

Origin or ACA, PCA or bifurcation of MCA

Question 39

Homonymous hemianopia

Answer 39

Vision field deficits in same half of visual field on both eyes

Question 40

Hemianesthesia

Answer 40

Loss of sensitivity to stimuli on one side

Question 41

Hemiplegia

Answer 41

One sided paralysis

Question 42

Cortical sensory loss

Answer 42

Loss of discriminative sensation

Question 43

Alexia without agraphia

Answer 43

Patient can write but cant read

Question 44

Medial geniculate lesion symptom

Answer 44

hearing loss

Question 45

Corpus callosum lesion symptom

Answer 45

alexia without agraphia

Question 46

Visual cortex lesion symptom

Answer 46

Homonymous hemianopia with macula sparing

Question 47

Thalmic infarct symptoms

Answer 47

PURELY SENSORY Contralateral homonymous hemianopia Complete contralateral sensory loss