What physiological phenomenon causes the pulse to be felt?

The pulse is felt primarily due to the contractions of the heart. Every time the heart beats, it pumps blood into the arteries. This surge of blood creates pressure in the arterial walls, resulting in a palpable wave that can be felt at various points on the body, such as the wrist or neck.

The heart's contraction, specifically during the systolic phase, is what generates this pulse. Each heartbeat corresponds to one pulse wave, leading to the rhythmic sensation that is characteristic of a pulse. While factors such as blood flow through veins or muscle relaxation play roles in the overall circulatory system, they do not directly cause the pulse phenomenon. Instead, they contribute to the overall dynamics of blood circulation. In summary, the heart's contractions are the driving force behind the pulse that can be felt throughout the body's vascular system.