The only valves are in the heart. The pulses we can feel in our arms and legs do not have valves and the veins that return the blood to the heart do not have an obvious means of transporting blood.
This is not true. Deep veins as well as some nearer the skin do have valves to prevent backflow. This is largely so movement aids circulation rather than often impeding it.
You are correct Cladking – thank for correcting me.
I meant to say the only ‘pumps’ are in the heart. That after the blood flows (is pumped) through the arteries and the capillaries there is no pumping mechanism to push the blood through the veins back to the heart.
As you correctly point out; some veins have valves. These valves however are only to prevent flowback and the build up of pressure in the lower part of the body.