Capillaries do not have valves. Veins are the blood vessels with valves.
Valves are in the veins.
If you mean the milk ducts, no, they have no valves. The lymph vessels do. All lymph vessels everywhere in the body do.
Arteries are valve-less vessels, meaning there are no valves.
Infection of vessels and heart valves is a special characteristic of C. fetus.
passive
Only veins contain valves. The valves prevent the backward flow of blood.
No. Only venous vessles contain valves.
Valves
veins
Veins have valves, arteries don't.
They have valves so that they can move lymphatic fluid much the same as veins by skeletal muscle contraction.