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17 changes: 17 additions & 0 deletions circulatory-system-heart-blood-vessels-blood-s10/README.md
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## Blood Vessels: Arteries, Veins, and Capillaries

### Arteries
Arteries carry blood away from the heart. Most arteries carry oxygen-rich blood. The aorta is the largest artery in the body.

### Veins
Veins carry blood back to the heart. Most veins carry oxygen-poor blood and contain valves that prevent backflow.

### Capillaries
Capillaries are the smallest blood vessels. They connect arteries and veins and allow the exchange of oxygen, nutrients, and waste materials between blood and body tissues.

### Functions of Blood Vessels
- Transport oxygen to body cells.
- Deliver nutrients throughout the body.
- Remove carbon dioxide and other wastes.
- Help maintain continuous blood circulation.

## ✨ Summary

This comprehensive resource provides everything needed to teach and understand blood circulation, with emphasis on:
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