Is The structure of a lymph vessel is most similar to arteries or arterioles?

The structure of a lymph vessel is most similar to that of veins rather than arteries or arterioles. Lymph vessels have thinner walls, larger lumens, and valves to prevent backflow, similar to veins. In contrast, arteries and arterioles have thicker, more muscular walls to handle higher pressure from blood flow. Therefore, lymph vessels share more characteristics with veins in terms of structure and function.