Arteries of the brain II

The tutorial explores the complex vascular anatomy of the brain, focusing on the arteries as seen from a basal view. It highlights the historical contributions of Thomas Willis, who identified the Circle of Willis. The video breaks down the brain's blood supply into anterior and posterior circulations, detailing the arteries involved in each. The anterior circulation arises from the internal carotid arteries, while the posterior circulation originates from the vertebral arteries. The tutorial concludes with a summary of the Circle of Willis, an anastomotic circle connecting the two circulations.

Who was the British physician that contributed significantly to the study of the brain's vascular anatomy?

• William Harvey

• Joseph Lister

• Edward Jenner

• Thomas Willis

Which artery is the first branch of the internal carotid artery in the anterior circulation?

• Anterior cerebral artery

• Anterior choroidal artery

• Middle cerebral artery

• Posterior communicating artery

What is the clinical significance of an occlusion in the anterior cerebral artery?

• Facial paralysis

• Motor and sensory deficits of the lower limb

• Blindness

• Hearing loss

From which artery does the posterior circulation of the brain arise?

• Internal carotid artery

• Vertebral artery

• Anterior cerebral artery

• Basilar artery

What is the role of the anterior spinal artery?

• Supplies the occipital lobe

• Supplies the frontal lobe

• Supplies the medulla and spinal cord

• Supplies the cerebellum

Which artery is responsible for supplying the superior surface of the cerebellum?

• Posterior cerebral artery

• Superior cerebellar artery

• Labyrinthine artery

• Anterior inferior cerebellar artery

What is a potential clinical outcome of a thromboembolic obstruction in the posterior cerebral artery?

• Motor deficits in the lower limb

• Facial paralysis

• Hearing loss

• Contralateral homonymous hemianopsia

Which arteries form the Circle of Willis?

• Internal carotid artery and posterior communicating artery

• Anterior cerebral artery and basilar artery

• Middle cerebral artery and vertebral artery

• Posterior cerebral artery and anterior communicating artery

What is the function of the posterior communicating artery in the Circle of Willis?

• Supplies the cerebellum

• Supplies the frontal lobe

• Connects the anterior and posterior circulations

• Connects the left and right anterior cerebral arteries

Which artery is not considered a part of the cerebral arterial circle?

• Anterior cerebral artery

• Basilar artery

• Middle cerebral artery

• Posterior cerebral artery