Question

Give one structural and one functional difference between artery and vein .

Answer 1

STRUCTURAL DIFFERENCE:
artery is thick walled and vein is thin walled

FUNCTIONAL DIFFERENCE:
artery carry oxygenated blood( except pulmonary artery) and veins carry de-oxygenated blood (except pulmonary vein)

Answer 2

Veins:

carry blood from the tissues of the body back to the heart

are usually positioned closer beneath the surface of the skin

are less muscular than arteries, but contain valves to help keep blood flowing in the right direction, usually toward the heart

would collapse if blood flow stops.

Arteries:

carry blood away from the heart to the tissues of the body

are usually positioned deeper within the body

are more muscular than veins, which helps in transporting blood that is full of oxygen efficiently to the tissues

would generally remain open if blood flow stopped, due to their thick muscular layer.