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Which artery supplies the head and neck from the side of the neck?

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Detailed anatomical illustration of the human thyroid gland and surrounding structures, showing the right and left lobes, isthmus, nearby arteries, veins, nerves, lymph nodes, and cartilage in the neck. — thyroid gland Human thyroid gland.

The artery that supplies the head and neck from the side of the neck is the carotid artery.1

Specifically, there are two common carotid arteries that extend headward on each side of the neck. Each common carotid artery divides into an internal and an external carotid artery. While the internal carotid artery primarily supplies the brain, the external carotid artery ascends through the upper part of the side of the neck to provide blood to various structures, including the larynx, thyroid gland, face, and scalp.1