carotid sinus

The carotid sinus is a small, specialized area located at the beginning of the carotid artery in your neck, where it branches off from the main artery to the brain. It contains sensitive nerve endings that detect changes in blood pressure. When blood pressure rises, the carotid sinus sends signals to the brain to lower it, and vice versa. This reflex helps maintain stable blood pressure levels, ensuring that your brain and body receive a consistent blood supply. The carotid sinus plays an essential role in the body's automatic regulation of blood pressure.