Why is artery more elastic and more contractile than a vein?

Explanation

### Step-by-Step Solution:

1. **Definition of Arteries and Veins**:
- Arteries are blood vessels that carry oxygenated blood away from the heart to various parts of the body.
- Veins are blood vessels that carry deoxygenated blood back to the heart.

2. **Function of Arteries and Veins**:
- The primary function of arteries is to transport oxygen-rich blood, which requires them to withstand high pressure generated by the heart's pumping action.
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