Veins have valves, arteries don't.
the type of blood vessels which flow contaminated blood to the heart are known as VEINS
The smooth muscle type is associated with blood vessels. This muscle type is involuntary.
Canary blod vessels
The smallest blood vessels of the body = capillaries
Veins.
vein
vein
A hemangioma is actually a type of tumor that lines the blood vessels. It is basically an increased number of vessels that are filled with blood.
The stomach and blood vessels are composed of smooth muscles.
signals from the heart regulate the flow of blood . there are some values which regulate the backward flow of blood
Veins
veins