Stroke Vascualr

Question 1

What is the primary source of the posterior cerebral circulation?

Answer 1

The posterior cerebral circulation primarily originates from the vertebral arteries.

Question 2

True or False: The posterior cerebral artery (PCA) is a direct branch of the internal carotid artery.

Answer 2

False

Question 3

Fill in the blank: The _____ artery supplies the occipital lobe and the inferior part of the temporal lobe.

Answer 3

posterior cerebral

Question 4

What are the two main branches of the posterior cerebral artery?

Answer 4

The two main branches are the calcarine artery and the posterior temporal artery.

Question 5

Which area of the brain is primarily supplied by the calcarine artery?

Answer 5

The calcarine artery primarily supplies the primary visual cortex.

Question 6

Multiple Choice: Which of the following arteries is NOT a branch of the posterior cerebral artery? a) Calcarine artery b) Posterior choroidal artery c) Anterior cerebral artery

Answer 6

c) Anterior cerebral artery

Question 7

What is the role of the posterior choroidal arteries?

Answer 7

The posterior choroidal arteries supply the choroid plexus in the lateral and third ventricles.

Question 8

True or False: The PCA connects with the anterior circulation via the posterior communicating artery.

Answer 8

True

Question 9

Short Answer: What is the clinical significance of occlusion in the PCA?

Answer 9

Occlusion of the PCA can lead to visual field deficits and memory problems due to its supply to the visual cortex and parts of the temporal lobe.

Question 10

Fill in the blank: The PCA also provides branches to the _____ and _____ lobes.

Answer 10

occipital, temporal

Question 11

What anatomical landmark is associated with the division of the PCA?

Answer 11

The division of the PCA is often associated with the splenium of the corpus callosum.

Question 12

Multiple Choice: Which structure is NOT typically affected by posterior cerebral artery strokes? a) Visual cortex b) Hippocampus c) Primary motor cortex

Answer 12

c) Primary motor cortex

Question 13

Short Answer: Name one common symptom of PCA stroke.

Answer 13

One common symptom is homonymous hemianopsia, which is a visual field loss on the same side of both eyes.

Question 14

What is the significance of the posterior communicating artery in the context of cerebral circulation?

Answer 14

The posterior communicating artery provides collateral circulation between the anterior and posterior cerebral circulation.

Question 15

What are the primary arteries that supply the posterior circulation of the brain?

Answer 15

The vertebral arteries and the basilar artery.

Question 16

True or False: The vertebral arteries arise from the subclavian arteries.

Answer 16

True.

Question 17

What do the vertebral arteries merge to form?

Answer 17

The basilar artery.

Question 18

Fill in the blank: The posterior inferior cerebellar artery is abbreviated as _____.

Answer 18

PICA.

Question 19

What is the main function of the posterior circulation?

Answer 19

To supply blood to the posterior part of the brain, including the cerebellum and brainstem.

Question 20

Which artery branches off the basilar artery to supply the anterior part of the cerebellum?

Answer 20

The anterior inferior cerebellar artery (AICA).

Question 21

True or False: The basilar artery is formed by the union of the internal carotid arteries.

Answer 21

False.

Question 22

What regions of the brain does the basilar artery supply?

Answer 22

The brainstem and the cerebellum.

Question 23

Multiple Choice: Which artery is NOT a branch of the basilar artery? A) PICA B) AICA C) PCA D) MCA

Answer 23

D) MCA.

Question 24

What does PCA stand for in the context of posterior circulation?

Answer 24

Posterior cerebral artery.

Question 25

Fill in the blank: The posterior cerebral artery primarily supplies the _____.

Answer 25

Occipital lobe.

Question 26

True or False: The AICA supplies the inferior surface of the cerebellum.

Answer 26

True.

Question 27

Which structure does the PICA primarily supply?

Answer 27

The posterior inferior cerebellum.

Question 28

What is the clinical significance of the posterior circulation?

Answer 28

It is vital for the function of the brainstem and cerebellum, and its occlusion can lead to specific syndromes like Wallenberg syndrome.

Question 29

Multiple Choice: Which artery is most likely to be involved in a lateral medullary syndrome? A) AICA B) PICA C) PCA D) MCA

Answer 29

B) PICA.

Question 30

Fill in the blank: The vertebral arteries ascend through the _____ foramina.

Answer 30

Transverse.

Question 31

True or False: The basilar artery extends along the ventral surface of the brainstem.

Answer 31

True.

Question 32

What is the name of the artery that supplies the medial aspect of the occipital and inferior temporal lobes?

Answer 32

The posterior cerebral artery (PCA).

Question 33

Which artery is responsible for supplying the cochlea and vestibular apparatus?

Answer 33

The AICA.

Question 34

True or False: The AICA arises from the vertebral artery.

Answer 34

False.

Question 35

What is the primary function of the PICA?

Answer 35

To supply blood to the cerebellum and the lateral medulla.

Question 36

Fill in the blank: The brainstem receives blood supply from the _____ artery.

Answer 36

Basilar.

Question 37

What is one major consequence of occlusion in the PCA?

Answer 37

Visual field deficits, such as homonymous hemianopsia.

Question 38

Multiple Choice: Which artery supplies the cerebellar tonsils? A) AICA B) PICA C) Both A and B D) None of the above

Answer 38

C) Both A and B.

Question 39

What is the relationship between the vertebral arteries and the foramen magnum?

Answer 39

The vertebral arteries enter the cranial cavity through the foramen magnum.