Question

Blood is moved through the vascular system by
A. valves in the wall of the blood vessels.
B. peristalsis caused by smooth muscle in the blood vessel walls.
C. pressure gradients created by the heart.
D. osmotic pressure.
E viscosity of the blood

Answer 1

C- the heart pumps the blood through the arteries and into the extended vascular system.

Answer 2

Blood is moved through the vascular system by pressure gradients created by the heart.