The wave of expansion of an artery when blood is forced into it is called:(a) flow (b) heart beat (c) pulse (d) ticking

(c) pulse

Pulse or heart rate is the rhythmic dilation of the arteries, caused by the opening and closing of the aortic valve in the heart. It can be felt by applying firm fingertip pressure to the skin especially at sites where the arteries travel near the skin’s surface, like wrist and neck.