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Arterial Supply of the Brain: Circle of Willis – Carotid and Subclavian Arteries
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Slides Carotid and subclavian arteries.pdf
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00:00 Lastly, we’re looking at the arterial supply to the circle of Willis. Now for detail, that will be covered in another lecture. But the purpose of your understanding at this point is to remember that the internal carotid arteries and the vertebral arteries are the vessels that are going to supply the cerebral circulation. The internal carotids are shown here and here. There are no branches of the internal carotid arteries until you get into the skull. Then you can start to see some of the branches here. Again, those will be described in detail in another lecture. 00:48 The vertebral arteries are shown here, these major vessels. They come together joined to form the vessel or artery that we see here. The take home message here is that the internal carotid arteries contribute to what is known as the anterior circulation to the brain through their branching pattern that we see around here, whereas the posterior circulation is supplied by the vertebral arteries. Here is the internal carotid artery labelled for you. 01:28 Then here’s the vertebral artery labelled for you as well.
About the Lecture
The lecture Arterial Supply of the Brain: Circle of Willis – Carotid and Subclavian Arteries by Craig Canby, PhD is from the course Head and Neck Anatomy with Dr. Canby.
Included Quiz Questions
Which of the following arteries mainly provide the cerebral circulation?
- Internal carotid and vertebral arteries
- Subclavian and occipital arteries
- Carotid and spinal arteries
- External carotid and vertebral arteries
- Internal carotid and external carotid arteries
Which of the following statements regarding the cerebral circulation is correct?
- Internal carotid arteries only give branches after entering the skull.
- Branches of the internal carotid supply to the brain and facial muscles as well.
- Vertebral arteries contribute to the anterior circulation.
- Internal carotid arteries contribute to the posterior circulation.
- Two basilar arteries join to form the vertebral artery.
Author of lecture Arterial Supply of the Brain: Circle of Willis – Carotid and Subclavian Arteries
Craig Canby, PhD
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The circle of Willis was not explained. The video basically just says the vertebral arteries and internal carotids give rise to the circle of Willis. What about all the other branches?
Great lecture! straight to the point and extremely informative. thank you so much for so many amazing teachers.
