[MCQ] Cerebrovascular Diseases Ischemic stroke- Part 7

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Cerebrovascular Diseases Ischemic stroke- Part 7

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Question 1

Bilateral common carotid artery occlusions at their origin may occur in ?

A	Temporal arteritis
B	Takayasu’s arteritis
C	Kawasaki disease
D	Polyarteritis nodosa

Question 1 Explanation:

Bilateral common carotid artery occlusions at their origin may occur in Takayasu’s arteritis

Question 2

The vertebral arteries join to form the basilar artery at ?

A	Foramen magnum
B	Lower medulla oblongata
C	Pontomedullary junction
D	Interpeduncular fossa

Question 2 Explanation:

Vertebral arteries join to form basilar artery at the pontomedullary junction.

Question 3

Basilar artery divides into 2 posterior cerebral arteries at ?

A	Foramen magnum
B	Lower medulla oblongata
C	Pontomedullary junction
D	Interpeduncular fossa

Question 3 Explanation:

Basilar artery divides into two posterior cerebral arteries in the interpeduncular fossa.

Question 4

Posterior circulation supplies which of the following ?

A	Hippocampus
B	Medial temporal lobes
C	Occipital lobes
D	All of the above

Question 4 Explanation:

The posterior circulation is composed of the paired vertebral arteries, the basilar artery, and the paired posterior cerebral arteries. It supplies the cerebellum, medulla, pons, midbrain, subthalamus, thalamus, hippocampus, and medial temporal and occipital lobes.

Question 5

The artery of Percheron arises from ?

A	Anterior cerebral artery
B	Posterior cerebral artery
C	Vertebral artery
D	Basilar artery

Question 5 Explanation:

Thalamogeniculate, Percheron and posterior choroidal arteries are the penetrating branches of the proximal P1 segment of PCA.

Question 6

Occlusion of artery of Percheron produces ?

A	Paresis of upward gaze
B	Drowsiness
C	Abulia
D	All of the above

Question 6 Explanation:

Occlusion of artery of Percheron produces paresis of upward gaze, drowsiness & abulia

Question 7

Weber’s syndrome results due to occlusion of ?

A	Anterior cerebral artery
B	Middle cerebral artery
C	Posterior cerebral artery
D	Basilar artery

Question 8

Claude’s syndrome results due to occlusion of ?

A	Anterior cerebral artery
B	Middle cerebral artery
C	Posterior cerebral artery
D	Basilar artery

Question 9

In Claude’s syndrome, ataxia is due to involvement of ?

A	Cerebellum
B	Superior cerebellar peduncle
C	Red nucleus
D	All of the above

Question 9 Explanation:

III nerve palsy with contralateral ataxia is called Claude’s syndrome. Ataxia is due to involvement of red nucleus or dentatorubrothalamic tract

Question 10

In Weber’s syndrome, hemiplegia is due to involvement of ?

A	Internal capsule
B	Cerebral peduncle
C	Corpus callosum
D	Pyramidal decussation

Question 10 Explanation:

III nerve palsy with contralateral hemiplegia is called Weber’s syndrome. Hemiplegia is localized to the cerebral peduncle. Hermann Weber, German physician, 1863

Question 11

Complete oculomotor nerve lesion results in all except ?

A	Ipsilateral ptosis
B	Pupillary dilatation
C	Loss of pupillary & accommodation reflexes
D	Medical deviation of the eye

Question 11 Explanation:

Complete oculomotor (III) nerve lesion results in ipsilateral ptosis, pupillary dilatation, loss of pupillary and accommodation reflexes and ‘lateral’ deviation of the eye. III CN supplies all extraocular muscles except lateral rectus and superior oblique.

Question 12

Edinger-Westphal nucleus located in ?

A	Upper mid-brain
B	Lower mid-brain
C	Pons
D	Medulla oblongata

Question 13

Fascicles from III CN nuclei run forward & laterally through ?

A	Substantia nigra
B	Red nuclei
C	Dentate nuclei
D	Olivary nuclei

Question 13 Explanation:

III cranial nerve nuclei are located in midbrain. They consist of Edinger-Westphal nucleus located in upper mid-brain supplying fibers to pupils and motor nucleus located in lower mid-brain supplying extra-ocular muscles, except lateral rectus and superior oblique. Fascicles from the III CN nuclei run forward & laterally through red nuclei and converge at the inter-peduncular fossa. Lesion of lower mid-brain affects extraocular muscles but spares pupils, whereas lesions involving both upper & lower parts of mid-brain are associated with pupillary dilatation.

Question 14

Lower branch of occulomotor nerve supplies all of the following extraocular muscles except ?

A	Medial rectus
B	Levator palpebrae superioris
C	Inferior rectus
D	Inferior oblique

Question 14 Explanation:

After emerging from mid-brain, III CN lies between posterior cerebral artery and the superior cerebellar artery. It runs forward parallel to the posterior communicating artery and enters the orbit through the superior orbital fissure, dividing into an upper and a lower branch. The upper branch supplies the levator palpebrae superioris and superior rectus muscles. The lower branch supplies three muscles: the medial rectus, the inferior rectus, and the inferior oblique muscle. The nerve to the inferior oblique muscle conveys the preganglionic parasympathetic fibers to the ciliary ganglion from which the post-ganglionic parasympathetic fibers arise to supply the ciliary muscle and the muscles of the iris (pupilloconstrictor fibers).

Question 15

Hemiballismus is due to damage to which of the following ?

A	Substantia nigra
B	Red nucleus
C	Thalamus
D	Subthalamic nucleus

Question 15 Explanation:

If the subthalamic nucleus is involved, contralateral hemiballismus may occur.

Question 16

Which of the following is false about “Thalamic Dejerine-Roussy syndrome” ?

A	Contralateral hemisensory loss
B	Agonizing pain in affected area later
C	Responds poorly to analgesics
D	None of the above

Question 16 Explanation:

Thalamic Dejerine-Roussy syndrome consists of contralateral hemisensory loss followed later by agonizing, searing or burning pain in the affected areas. Symptoms are persistent and respond poorly to analgesics. May respond to carbamazepine or gabapentin.

Question 17

Occlusion of the posterior cerebral artery can produce which of the following ?

A	Peduncular hallucinosis
B	Contralateral homonymous hemianopia, macular sparing
C	Acute disturbance in memory
D	All of the above

Question 17 Explanation:

All the above presentations occur due to occlusion of distal PCA causing infarction of hippocampus, medial temporal & occipital lobes. Peduncular hallucinosis means visual hallucinations of brightly colored scenes & objects. Because memory has bilateral representation, this defect clears soon

Question 18

Anton’s syndrome results due to occlusion of ?

A	Bilateral occlusion of distal ACA
B	Bilateral occlusion of distal MCA
C	Bilateral occlusion of distal PCA
D	Bilateral occlusion of vertebral artery

Question 19

In Anton’s syndrome, patient is often unaware of ?

A	Smell
B	Hearing
C	Blindness
D	Colour vision

Question 19 Explanation:

In Anton’s syndrome, patient is unaware of blindness. Bilateral infarction in distal PCAs produces cortical blindness (blindness with preserved pupillary light reaction).

Question 20

Which symptom can occur in Balint’s syndrome ?

A	Optic ataxia
B	Oculomotor apaxia
C	Asimultanagnosia
D	All of the above

Question 20 Explanation:

Balint’s syndrome is a disorder of the orderly visual scanning of the environment, usually resulting from infarctions secondary to low flow in “watershed” between distal PCA & MCA territories. There occurs persistence of a visual image for several minutes despite gazing at another scene (palinopsia) or an inability to synthesize whole of an image (asimultanagnosia).

Question 21

Experiencing persistence of a visual image for several minutes despite gazing at another scene is called ?

A	Optic ataxia
B	Ocular ataxia
C	Simultagnosia
D	Palinopia

Question 21 Explanation:

In palinopia, patients experience persistence of a visual image for several minutes despite gazing at another scene.

Question 22

The vertebral artery enters into the transverse cervical vertebral foramen at ?

A	C7
B	C6
C	C4
D	C3

Question 22 Explanation:

The first (V1) segment of vertebral artery extends from its origin to its entrance into the sixth or fifth transverse vertebral foramen.

Question 23

Branches from which segment of vertebral artery supply brainstem and cerebellum ?

A	1
B	2
C	3
D	4

Question 23 Explanation:

Fourth (V4) segment of vertebral artery courses upward from foramen magnum to join the other vertebral artery and forms the basilar artery. Only the fourth segment gives rise to branches that supply the brainstem and cerebellum.

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See all quizzes of Cerebrovascular Diseases Ischemic stroke at here:

Cerebrovascular Diseases Ischemic stroke- Part 1| Cerebrovascular Diseases Ischemic stroke- Part 2| Cerebrovascular Diseases Ischemic stroke- Part 3|Cerebrovascular Diseases Ischemic stroke- Part 4|Cerebrovascular Diseases Ischemic stroke- Part 5| Cerebrovascular Diseases Ischemic stroke- Part 6| Cerebrovascular Diseases Ischemic stroke- Part 7|Cerebrovascular Diseases Ischemic stroke- Part 8

1 Bilateral common carotid artery occlusions at their origin may
occur in ?
A. Temporal arteritis
B. Takayasu’s arteritis
C. Kawasaki disease
D. Polyarteritis nodosa

2 The vertebral arteries join to form the basilar artery at ?
A. Foramen magnum
B. Lower medulla oblongata
C. Pontomedullary junction
D. Interpeduncular fossa
3 Basilar artery divides into 2 posterior cerebral arteries at ?
A. Foramen magnum
B. Lower medulla oblongata
C. Pontomedullary junction
D. Interpeduncular fossa

3 Posterior circulation supplies which of the following ?
A. Hippocampus
B. Medial temporal lobes
C. Occipital lobes
D. All of the above

4 The artery of Percheron arises from ?
A. Anterior cerebral artery
B. Posterior cerebral artery
C. Vertebral artery
D. Basilar artery

5 Occlusion of artery of Percheron produces ?
A. Paresis of upward gaze
B. Drowsiness
C. Abulia
D. All of the above

6 Weber’s syndrome results due to occlusion of ?
A. Anterior cerebral artery
B. Middle cerebral artery
C. Posterior cerebral artery
D. Basilar artery
7 Claude’s syndrome results due to occlusion of ?
A. Anterior cerebral artery
B. Middle cerebral artery
C. Posterior cerebral artery
D. Basilar artery
8 In Claude’s syndrome, ataxia is due to involvement of ?
A. Cerebellum
B. Superior cerebellar peduncle
C. Red nucleus
D. All of the above

9 In Weber’s syndrome, hemiplegia is due to involvement of ?
A. Internal capsule
B. Cerebral peduncle
C. Corpus callosum
D. Pyramidal decussation

10 Complete oculomotor nerve lesion results in all except ?
A. Ipsilateral ptosis
B. Pupillary dilatation
C. Loss of pupillary & accommodation reflexes
D. Medical deviation of the eye

11 Edinger-Westphal nucleus located in ?
A. Upper mid-brain
B. Lower mid-brain
C. Pons
D. Medulla oblongata
12 Fascicles from III CN nuclei run forward & laterally through ?
A. Substantia nigra
B. Red nuclei
C. Dentate nuclei
D. Olivary nuclei

13 Lower branch of occulomotor nerve supplies all of the following
extraocular muscles except ?
A. Medial rectus
B. Levator palpebrae superioris
C. Inferior rectus
D. Inferior oblique

14 Hemiballismus is due to damage to which of the following ?
A. Substantia nigra
B. Red nucleus
C. Thalamus
D. Subthalamic nucleus

15 Which of the following is false about “Thalamic Dejerine-Roussy
syndrome” ?
A. Contralateral hemisensory loss
B. Agonizing pain in affected area later
C. Responds poorly to analgesics
D. None of the above

16 Occlusion of the posterior cerebral artery can produce which of
the following ?
A. Peduncular hallucinosis
B. Contralateral homonymous hemianopia, macular sparing
C. Acute disturbance in memory
D. All of the above

17 Anton’s syndrome results due to occlusion of ?
A. Bilateral occlusion of distal ACA
B. Bilateral occlusion of distal MCA
C. Bilateral occlusion of distal PCA
D. Bilateral occlusion of vertebral artery
\
18 In Anton’s syndrome, patient is often unaware of ?
A. Smell
B. Hearing
C. Blindness
D. Colour vision

19 Which symptom can occur in Balint’s syndrome ?
A. Optic ataxia
B. Oculomotor apaxia
C. Asimultanagnosia
D. All of the above

20 Experiencing persistence of a visual image for several minutes
despite gazing at another scene is called ?
A. Optic ataxia
B. Ocular ataxia
C. Simultagnosia
D. Palinopia

21 The vertebral artery enters into the transverse cervical vertebral
foramen at ?
A. C7
B. C6
C. C4
D. C3

22 Branches from which segment of vertebral artery supply brainstem
and cerebellum ?
A. 1
B. 2
C. 3
D. 4

Cerebrovascular Diseases Ischemic stroke

[MCQ] Cerebrovascular Diseases Ischemic stroke- Part 7

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Cerebrovascular Diseases Ischemic stroke- Part 7

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