Lesions

Question 0

Unilateral CST lesion in brain or brianstem above decussation

Answer 0

Contralateral weakness, paralysis, increased reflexes, and babinski sign

Question 1

Unilateral CST UMN in spinal cord

Answer 1

Ipsilateral weakness, paralysis, spasticity, increased reflexes, and babinski sign

Question 2

Days after UMN lesion

Answer 2

Spinal shock

Flaccidity and areflexia

Question 3

Lesion of spinal cord ventral horn or periphery

Answer 3

Ipsilateral weakness, paralysis, flaccidity, decreased or absent reflexes, muscle fasciculations

Question 4

Lesion of lateral spinothalamic tract

Answer 4

Loss of pain and temp on contralateral side 1-3 segments below site of lesion

Question 5

Lesion of anterior white commissure

Answer 5

Impair pain and temp sensation bilaterally

Question 6

Lesion of dorsolateral medulla

Answer 6

Affects PICA

Loss of pain and temp on ipsilateral face (spinal trigeminal tract) and contralateral body

Question 7

Unilateral lesion of spinal cord in dorsal columns

Answer 7

Ipsilateral impaired position and vibratory sensation

Question 8

Unilateral lesion in medial lemniscus about decussation in medulla

Answer 8

Contralateral loss of position and vibration sensation

Question 9

Unilateral lesion of thalamus, corona radiata, or cortex

Answer 9

Contra lateral loss of all sensory modalities

MVP and pain/temp

Question 10

Lesion in Broca’s area

Answer 10

Motor aphasia

Question 11

Lesion in wernickes area

Answer 11

Receptive aphasia

Question 12

Lesion of optic nerve

Answer 12

Ipsilateral blindness

Question 13

Lesion of middle of optic chiasm

Answer 13

Bitemporal hemianopsia (outer vision missing)

Question 14

Unilateral lesion of optic tract

Answer 14

Contra lateral homonymous hemianopsia (can’t see R or L half)

Question 15

Unilateral lesion of lateral geniculate or optic radiation

Answer 15

Contra lateral homonymous hemianopsia

Question 16

Lesion of temporal love affecting Meyers loop

Answer 16

Contralateral superior quantrantonopsia

Can’t see superior visual field

Question 17

Lesion of visual cortex

Answer 17

Contra lateral homonymous hemianopsia

Macular sparing

Question 18

Lesion in MLF

Answer 18

Lateral deviation normal no conjugate medial deviation

Question 19

Unilateral lesion in frontal eye field in frontal lobe

Answer 19

Eyes deviate towards side of lesion

Question 20

ACA lesion

Answer 20

Leg and foot motor and sensory

Question 21

MCA lesion

Answer 21

Broca’s and wernickes areas

Motor and sensory of face and upper extremities

Question 22

PCA lesion

Answer 22

Midbrain thalamus occipital lobe, inferior surface of temporal lobe

Question 23

Anterior choroidal artery lesion

Answer 23

Lateral geniculate body, globes pallidus, posterior limb of internal capsule

Question 24

Lateral striate arteries

Answer 24

Off of MCA Stroke arteries Internal capsule, caudate nucleus, putamen, globus pallidus

Question 25

Diencephalon (breathing) and eyes

Answer 25

Cheyne stokes respiration Deeper and faster breathing Small reactive pupils-symp originates here

Question 26

Midbrain (breathing) and eyes

Answer 26

Central neurogenic hyperventilation Mid position fixed pupils Bilateral impairment of para and symp

Question 27

Pons (breathing)

Answer 27

Apneustic respirations | Deep gasping inspiration with a pause at full inspiration with insufficient release

Question 28

Medulla (breathing)

Answer 28

Ataxic respiration | Very irregular breathing

Question 29

CN III

Answer 29

Uncal herniation Unilateral dilated fixed pupils-Loss of light reflex Loss of para traveling with nerve

Question 30

Lesion of MLF

Answer 30

Dolls eye test: oculocephalic reflex. Intact reflex eyes will deviate away from side the head is turning and will deviate conjugately In a lesion: eyes will not deviate conjugately