How does the elasticity of arterial walls help maintain blood flow around the body?
The heart stroke maintains blood flow clearly. But the energy of the stroke (in blood pressure) causes the wall to stretch or dilate or pulse, and because it is elastic, the blood vessel returns to its unstretched state, and in returning, it pushes on the blood, pulsing it forward, thus maintaining blood flow, and seeing that the energy of the heart stroke in stretching the arterial wall is not lost entirely, but returned in blood flow.
