vertebralarterid

Vertebralarterid refers to the vertebral arteries, a pair of major arteries that originate from the subclavian arteries in the neck. These arteries ascend through the transverse foramina of the cervical vertebrae, providing a protected pathway to the brain. Their primary role is to supply oxygenated blood to the posterior part of the brain, including the cerebellum, brainstem, and parts of the occipital and temporal lobes.

The two vertebral arteries typically merge at the base of the skull to form the basilar artery. This union is a crucial part of the circle of Willis, an arterial anastomosis that helps ensure continuous blood flow to the brain even if one of the contributing arteries is narrowed or blocked. The vertebral arteries also supply blood to the spinal cord.

Conditions affecting the vertebral arteries can have significant neurological consequences. These include vertebral artery dissection, a tear in the artery wall that can lead to stroke, and vertebral artery stenosis, a narrowing of the artery due to atherosclerosis or other causes, which can also impair blood flow to the brain. Atherosclerotic plaque buildup is a common pathology. Symptoms related to vertebral artery issues can vary widely and may include dizziness, vertigo, visual disturbances, headache, and weakness or numbness on one side of the body, depending on the extent of blood flow reduction or the occurrence of a stroke. Diagnosis often involves imaging techniques such as Doppler ultrasound, CT angiography, or MR angiography.