Question

Difference between arteries & veins cannot be
based on
(1) Diameter of lumen
(2) Direction of blood flow w.r.t heart
(3) Presence of valves in veins
(4) Presence of endothelium in their wall​

Answer 1

Answer:

2.................................

Answer 2

Answer:

Arteries, like veins, are tube-shaped vessels that carry blood in the body. The chief difference between arteries and veins is the job that they do. Arteries carry oxygenated blood away from the heart to the body, and veins carry oxygen-poor blood back from the body to the heart.