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.
Smooth
Blood vessels are surrounded by smooth muscle. This is often known as visceral muscle. This type of muscle also lines the blood vessels and internal organs.
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
Synovial membrane.
Smooth muscle (involuntary)lines ducts and vessels.
The smallest blood vessels of the body = capillaries
Arteries have smooth muscle in their walls. The smaller the artery is, the less muscle is found. Veins have none, they count on the skeltal muscles to move blood back to the heart. The veins also have valves which prevent back flow.
Veins.
vein