selkärankavaltimoihin

Selkärankavaltimot, known in English as vertebral arteries, are a pair of major arteries that ascend through the neck. They originate from the subclavian arteries, which are located in the upper chest. As they travel upwards, the vertebral arteries pass through the transverse foramina of the cervical vertebrae, a series of small openings in the bones of the neck. This passage protects the arteries as they navigate the cervical spine.

Upon reaching the skull, the two vertebral arteries merge at the base of the brain to form the basilar artery. This junction is a critical point in the cerebral circulation. The vertebral arteries are essential for supplying oxygenated blood to the posterior circulation of the brain, which includes parts of the brainstem, cerebellum, and occipital lobes. They also contribute to the blood supply of the upper spinal cord.

Disruptions to the vertebral arteries, such as blockages or dissections, can lead to serious neurological deficits, including stroke. Conditions affecting the neck, like trauma or certain chiropractic manipulations, can sometimes compromise the function of these arteries. Their anatomical course and vital role in brain blood supply make them a significant focus in neurovascular health.