Question: thick are the largest arteries?
Answer: There is around 160 major arteries in the human body, and the largest artery is called the Aorta. ... The total wall thickness of arteries is around 1.0 mm and internal diameter of around 4.0 mm, with the exception of the Aorta, which has wall thickness of 2.0 mm and internal diameter of 25.0 mm.