Why are arteries elastic?

Answer 1

Arteries have to deal with a large and rapidly changing pressure, to do this without breaking they have to expand. However expanding reduces the blood pressure so it is important for the artery to spring back into shape. Veins don't need to worry about all that, so have thinner walls.

Answer 2

They have to deal with the constant pressure of the heart pumping the blood at different speeds. If your arteries did not have elasticity, they would have a higher blood pressure because they would not be able to expand and allow more blood to travel through at a slower rate

Answer 3

Arteries have to be thicker because they have to contain blood at higher pressure. The heart pumps blood into arteries, creating pressure. Veins merely collect blood after it passes through the capillaries; the circulation is driven by valves inside the veins, rather than by the pumping of the heart.

Answer 4

Arteries are more elastic than veins because they are designed to withstand tremendous blood pressures.

Veins, on the other hand, contain blood at relatively low blood pressure. That's why they have evolved valves to prevent the blood from going backwards.

Answer 5

Why do veins seem to have less elasticity than arteries?

They are not really, it only seems that way because veins are smaller in diameter and received less of the enzyme that promote elasticity given by an enzyme during growth development which come from skeletal cartilage. A bony cartilage, or cartilage in generals are made up of many cells, that has combines together forming this structure.

Answer 6

they aren't

--

The arteries are more elastic to withstand the greater pressure. Without elasticity they would likely burst.

Answer 7

Arteries carry blood away from the heart so they need thick muscular elastic walls to withstand the high pressure that occurs as the heart pumps blood.

Answer 8

vein walls are thicker

Answer 9

They have a current issue inside of it.