njurartärerna

The carotids, or carotiderna in Swedish, are the main arteries supplying blood to the head and neck. They are a pair of major blood vessels that arise from the aorta, the largest artery in the body. The common carotid arteries ascend on each side of the neck. Each common carotid artery then bifurcates, or divides, into two main branches: the external carotid artery and the internal carotid artery.

The external carotid artery primarily supplies blood to the face, scalp, and neck structures. It branches extensively to provide nourishment to the muscles of the face and head, the salivary glands, and the thyroid gland, among other areas.

The internal carotid artery is crucial for supplying oxygenated blood to the brain. It enters the skull and further divides into branches that perfuse large portions of the cerebral hemispheres, including the frontal, parietal, and temporal lobes. These arteries play a vital role in maintaining brain function and preventing strokes, which occur when blood flow to the brain is interrupted. Blockages or narrowing of the carotid arteries, often due to atherosclerosis (plaque buildup), can significantly increase the risk of stroke. Medical imaging and surgical interventions are sometimes used to assess and treat conditions affecting these important vessels.