Which of the following statements is incorrect?

Explanation

Option A is true: the right common carotid artery branches from the brachiocephalic artery. Option B is correct: the left common carotid artery arises from the aortic arch. Option C is accurate: the common carotid artery splits into internal and external carotid arteries at the upper border of the thyroid cartilage. Option D is incorrect because the carotid sinus serves as a baroreceptor (pressure sensor), not a chemoreceptor.