The valves in the heart are: the tricuspid valve, which is called the right A-V valve, and is between the right atrium and the right ventricle, a bicuspid valve (Mitral valve), also called the left A-V valve between the left atrium and the left ventricle, the pulmonary valve, which is a semilunar valve, between the right ventricle and pulmonary trunk and the aortic valve, also a semilunar valve, between the left ventricle and aorta.
Many veins, particularly those in the upper and lower limbs, have flaplike valves, which project inward from their linings. Valves areusuallycomposed of two leaflets that close if blood begins to backup in the vein. These valves aid in returning blood to the heart, but close if it is in the opposite direction.
Arteries do not contain valves
Capillaries contain precapillary sphincters, which may close a capillary by contracting or open it by relaxing. A precapillary sphincter responds to the demands of the cells the capillary supplies.
Veins have valves, arteries don't.
In the large veins. Because in the large veins the blood must fight the gravity, the blood is flowing up, there are valves in them to prevent the blood to fall down again.
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.
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
Yes, a hemangioma is a type of angioma. Hemangiomas are benign tumors made up of small blood vessels, while angiomas are tumors that form from blood vessels or lymph vessels.
venule
Veins.
vein
vein