carotid artery

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(anatomy) Either of the two principal arteries on both sides of the neck that supply blood to the head and neck. Also known as common carotid artery.

The main artery supplying oxygenated blood to the head. There is one carotid artery on each side of the neck. If the fingers are pressed gently against one of the arteries, the pulse (called the carotid pulse) can be felt. Simultaneous pressure against both carotid arteries is dangerous as it may stop blood flowing to the brain. Within the wall of each carotid artery is a swelling (the carotid sinus) which contains nerve-endings sensitive to pressure changes in the blood. Pressure against the sinuses (e.g. in a wrestling stranglehold) causes a reflex lowering of the blood pressure and slowing of the heart, which may result in loss of consciousness.

The main artery in the neck supplying oxygenated blood to the head.