Strokes

Question 1

Middle cerebral artery supply

Answer 1

supplies motor and sensory cortices of the upper limb and face

temporal lobe: Wernicke

frontal lobe: broca

Question 2

Middle cerebral artery symptoms

Answer 2

Contralateral paralysis and sensory loss of the face and upper limb

aphasia if in dominant hemisphere

hemineglect if in nondominant

Question 3

Anterior cerebral artery supplies

Answer 3

medial aspect of the primary and sensory cortices which on the homonculus is the lower limbs

Question 4

Anterior Cerebral artery stroke

Answer 4

contralateral paralysis and sensory loss of the lower limb

urinary incontinence

Question 5

Lenticulostriate artery supplies

Answer 5

striatum

internal capsule

Question 6

Lenticulostriate artery stroke

Answer 6

Basal ganglia deficits:

Contralateral paralysis (internal capsule)

Absence of cortical signs

Question 7

Anterior Spinal artery can cause

Answer 7

1. Corticospinal tract → contralateral hemiparesis
2. Medial lemniscus → contralateral loss of vibration and proprioception
3. Hypoglossal nuclei → ipsilateral tongue deviation

Question 8

Anterior Spinal artery most notably supplies

Answer 8

the medulla

branches also supply the spinal cord and can mimc a lesion that affects everything but the DCML

Question 9

Posterior Inferior Cerebellar Artery is a branch of the vertebral artery that most notably affects the

Answer 9

Nucleus Ambiguus of the Lateral Medulla which carries motor fibers from IX and X

Also vestibular nuclei, lateral spinothalamic tract, spinal trigeminal nucleus

sympathetic fibers

inferior cerebellar peduncles

Question 10

Posterior Inferior Cerebellar Artery stroke symptoms

Answer 10

Dysphagia, hoarseness, decreased gag reflex

decreased pain and temperature sensation from contralateral body and ipsilateral face

Ipsilateral horner syndrome
Ipsilateral ataxia, dysmetria

Question 11

Anterior inferior cerebellar artery supplies the

Answer 11

Lateral Pons

Question 12

the Anterior inferior cerebellar artery supplies the Lateral pons which contains the

Answer 12

Facial nucleus
Solitary Nucleus
Vestibular Nucleus
Spinothalamic tract, spinal trigeminal nucleus
Sympathetic fibers
Middle and Inferior cerebellar peduncles
Labyrinthine artery
Lateral Tegmentum

Question 13

List all the nuclei affected in Lateral pontine syndrome i.e Anterior Inferior cerebellar artery

Answer 13

a) Facial nucleus → ipsilateral facial paralysis
b) Solitary nucleus → taste deficit from the anterior ⅔ of the tongue
c) Vestibular nuclei → vertigo and nystagmus

d) Spinal nucleus and tract of CN V → ipsilateral facial deficits of pain
and temperature

e) Spinothalamic tract → contralateral deficits of pain and
temperature

f) Inferior cerebellar peduncle → ataxia, dysmetria, and falls toward
lesioned side

g) Lateral tegmentum → interruption of the hypothalamospinal tract
(sympathetic innervation of the face)

Question 14

Basilar artery affects basically everything except the

Answer 14

Reticular formation and tegmentum

patient can still move eyes vertically

Question 15

Stroke that causes dysphagia and hoarse voice and decreased gag reflex

Answer 15

Posterior Inferior cerebellar artery affecting the nucleus ambiguus (CN IX, X, XI)