Vertebral artery
The vertebral arteries are Artère S systemic bringing of the blood oxygenated towards the head and the brain.
One counts a right vertebral artery walking on in the right part of the Cou and a vertebral left walking on in the left part.
The vertebral artery born from the Artery subclavian homolatérale just after the division of the brachio-cephalic Trunk on the right, it is the first collateral one of the Artère subclavian on the left.
The vertebral artery walks on upwards while passing by the holes transversaires of the vertebrae of C6 to the bone atlas to enter the vertebral channel where the two vertebral arteries meet to form the Tronc basilaire in front of the Bulbe. On the diagram, one sees the tortuous aspect of the termination of the artery after the passage of the transverse channel of the atlas, obliquing towards the back then returning forwards cerebral Tronc after being to enter the vertebral channel.
The collateral ones are arteries spinales vascularisant the top of the spinal-cord and the lower cérébelleuses arteries, these collateral are born when the vertebral artery entered the vertebral channel, giving up only rare front branches.
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