The one going TO the heart from the body probably. I think the pulmonary vein which goes to the heart from the lungs at the heart is probably the same size due to the amount of blood that flows to the heart.
Circulatory system
Its venules
The jugular veins are part of the circulatory system.
Attery vein heart capikkary
The pulmonary artery and the pulmonary vein.
Yes it does. Its only one big vein though. The vein is called Dorsal Blood vessal.
it is to carry the blood around the body
the aorta
heart
They go first to the liver via the hepatic portal vein.
well you have to consider ever vein every artery and the heart
the parts of the are the artery and vein.