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.
one of a pair of arteries branching from the subclavian arteries, arising deep in the neck from the cranial and dorsal subclavian surfaces. Each vertebral artery divides into two cervical and five cranial branches, supplying deep neck muscles, the spinal cord and spinal membranes, and the cerebellum.