Definition of piece rate: Payment by results. Wage determination system in which the employee is paid for each unit of production at a fixed rate.
The main arteries in the neck are the common carotids arising differently, one on each side (see the images below). On the right, the common carotid arises at the bifurcation of the brachiocephalic trunk behind the sternoclavicular joint; on the left, it arises from the highest point on arch of the aorta in the chest.
A clogged artery in the neck is also referred to as carotid artery disease. This condition is what leads to stroke, since the blood supply is cut off to the brain for an extended period of time. It is hard to tell if you have this disease, since there are no symptoms before the onset of a stroke.