Overview of Brainstem and Brain Blood Supply

The video tutorial explains the blood supply to the nervous system, focusing on the internal carotid and vertebral arteries. It details the subclavian and vertebral arteries, the formation of the basilar artery, and the circle of Willis. The tutorial also covers the posterior inferior cerebellar artery (PICA) and its significance, as well as the anterior and posterior spinal arteries. The internal carotid artery's role in supplying the cerebral cortex is highlighted, emphasizing its connection to the circle of Willis.

Which artery is the first branch off the aortic arch?

• Left subclavian artery

• Brachiocephalic artery

• Left common carotid artery

• Right subclavian artery

What is the significance of the vertebral arteries fusing together?

• They form the internal carotid artery

• They become the middle cerebral artery

• They create the basilar artery

• They supply the occipital lobe

What does the posterior inferior cerebellar artery (PICA) supply?

• Superior cerebellum

• Lateral part of the medulla oblongata

• Anterior 2/3 of the spinal cord

• Midbrain

What is the primary function of the anterior spinal artery?

• Supply the lateral medulla

• Supply the cerebellum

• Supply the anterior 2/3 of the spinal cord

• Supply the posterior 1/3 of the spinal cord

Which artery is responsible for supplying the midbrain?

• Posterior inferior cerebellar artery

• Anterior inferior cerebellar artery

• Basilar artery

• Middle cerebral artery

What is the role of the circle of Willis?

• To supply blood to the spinal cord

• To provide alternate blood flow to the cerebrum

• To supply the cerebellum

• To connect the vertebral and carotid arteries

Which artery becomes the middle cerebral artery?

• Basilar artery

• External carotid artery

• Vertebral artery

• Internal carotid artery

What does the anterior cerebral artery supply?

• Cerebellum

• Temporal lobes

• Occipital lobes

• Frontal lobes and superior medial parietal lobes

Which artery is not part of the circle of Willis?

• Anterior cerebral artery

• Posterior cerebral artery

• Middle cerebral artery

• Internal carotid artery

What is the function of the posterior communicating artery?

• Supplies the cerebellum

• Connects the posterior cerebral and internal carotid arteries

• Connects the anterior and middle cerebral arteries

• Supplies the spinal cord