Content Reviewers:Ahmad El-Gammal, MBBS
Contributors:Elizabeth Nixon-Shapiro, MSMI, CMI, Victoria Cumberbatch, Jerry Ferro, Miguel Quintana, MD
So, cerebral circulation is the movement of blood through the vessels that supply the brain and surrounding structures.
Our brain is responsible for complex functions such as thinking, feeling, memory, movement, vision, and speech.
As a result, the brain requires a very efficient cerebral circulation to provide oxygen and nutrients, and remove carbon dioxide and wastes.
Because the consequences of hypoxia to the brain are so devastating, the brain is safeguarded by having a dual circulation, an anterior circulation, originating from the carotids, and a posterior circulation, originating from the vertebral arteries.
The two circulations eventually meet up, creating what’s known as the circle of Willis.
Alright, the anterior circulation starts in the neck, where the common carotid splits into the external and internal branches, the internal carotid arteries, passes through the carotid canal of the temporal bone of the skull and into the cranial cavity to supply the brain.
The posterior circulation starts with the vertebral arteries,which head up towards the cranium through the transverse foramina of the cervical vertebrae and then through the foramen magnum into the cranial cavity.