First Aid: Effects of Strokes

Question 1

a stroke in the posterior inferior cerebellar artery can affect what structures [6]

Answer 1

nucleus ambiguus
vestibular nuclei
spinal trigeminal nucleus
lateral spinothalamic tract
sympathetic fibers
inferior cerebellar peduncle

Question 2

a stroke in the PICA affecting the nucleus ambiguus would cause

Answer 2

dysphagia, hoarsness

Question 3

a stroke in the PICA affecting the vestibular nucleus would cause

Answer 3

vomiting
vertigo
nystagmus

Question 4

a stroke in the PICA affecting the spinal trigeminal nucleus and the lateral spinothalamic tract would cause

Answer 4

ALS: decreased pain and temperature to the contralateral body

trigeminal nucleus: decreased pain and temperature to the ipsilateral face

Question 5

a stroke in the PICA affecting the sympathetic fibers would cause

Answer 5

Horner’s syndrome

Question 6

a stroke in the PICA affecting the inferior cerebellar peduncle would cause

Answer 6

ipsilateral ataxia
dysmetria

Question 7

a stroke in the anterior spinal artery would affect what structures? [3]

Answer 7

corticospinal tract
medial lemniscus
caudal medulla (hypoglossal nerve)

Question 8

a stroke in the anterior spinal artery affecting the corticospinal tract would cause

Answer 8

contralateral paralysis of upper and lower limbs

Question 9

a stroke in the anterior spinal artery affecting the medial lemniscus would cause

Answer 9

decreased contralateral proprioception

Question 10

a stroke in the anterior spinal artery affecting the caudal medulla would cause

Answer 10

ipsilateral hypoglossal dysfunction (tongue deviates ipsilaterally)

Question 11

a stroke affecting the anterior inferior cerebellar artery can affect what structures? [6]

Answer 11

facial nerve nuclei
vestibular nuclei
spinothalamic tract, trigeminal nucleus
sympathetic fibers
middle and inferior cerebellar peduncles
inner ear

Question 12

a stroke in the anterior inferior cerebellar artery affecting the facial nucleus would cause

Answer 12

LMN facial paralysis (both upper and lower face)
decreased lacrimation, salivation, and taste from anterior 2/3 of tongue

Question 13

a stroke in the anterior inferior cerebellar artery affecting the middle and inferior cerebellar peduncles would cause

Answer 13

ipsilateral ataxis, dysmetria

Question 14

a stroke in the anterior inferior cerebellar artery affecting the inner ear would cause

Answer 14

ipsilateral sensorineural deafness

(labyrinthine artery is supplied by AICA)

Question 15

what structures could be affected by a stroke in the basilar artery?

Answer 15

pons, medulla, and midbrain

corticospinal and corticobulbar tracts

ocular cranial nuclei, paramedian pontine reticular formation

Question 16

what structures can be affected by a stroke in the posterior cerebral artery?

Answer 16

occipital lobe

Question 17

posterior cerebral artery supplies the

Answer 17

midbrain

Question 18

basilar artery supplies the

Answer 18

pons

Question 19

anterior spinal artery supplies the

Answer 19

medulla

Question 20

what arteries supply the medulla? [3]

Answer 20

anterior spinal
vertebral
posterior inferior cerebellar

Question 21

what arteries supply the pons? [3]

Answer 21

basilar
labyrinthine
anterior inferior cerebellar

Question 22

what artery supplies the midbrain?

Answer 22

posterior cerebral artery