Veins are thin-walled blood vessels that carry blood to the heart. The valves in veins help prevent backflow. In contrast, arteries have thicker walls and no valves. They carry blood away from the heart.
A vein.
The aorta is the vessel that carries oxygenated blood from the heart. In contrast, the pulmonary artery is the vessel that carries deoxygenated blood from the heart.
A blood vessel is a tube shaped organ that carries blood. It carries the blood through the tissues and organs of the human body.
red blood cell
ya it is a vain
venules
The Arteries
Aorta.
me
arteries
pulmonary vein
artery
your heart