The biggest artery is the aorta. When it comes off of the heart it's diameter is between 18 and 22 mm.
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The Aorta is the biggest artery, and the Superior and Inferior Vena Cava are the largest veins.
The aorta. The Superior and Inferior Vena Cavas are the biggest veins in the body. Hope this helps.
aorta
Yes, because there is more pressure in the artery than in the vein so the artery has to be big enough to hold the pressure that's inside it.
Aorta sends oxygenated blood to body. Aorta is the biggest artery in the body.