PATHOLOGY

Detailed explanation-1: -Of the two common carotid arteries, which extend headward on each side of the neck, the left originates in the arch of the aorta over the heart; the right originates in the brachiocephalic trunk, the largest branch from the arch of the aorta.

Detailed explanation-2: -The timing and amplitude of the carotid pulse contour reflect central aortic pressure. As aortic stenosis becomes more severe, the peak aortic pressure occurs later in systole (pulsus tardus) and the pulse amplitude is decreased (pulsus parvus).