A capillary is the smallest type of blood vessel in the body.
Capillaries connect arteries to veins and allow oxygen, nutrients, hormones, and waste products to pass between the bloodstream and surrounding tissues.
Their thin walls make them ideal for exchange between the blood and body cells.
Quick Fact
Most cells in the body are located only a short distance from a capillary.
See Also
- Blood Vessel
- Artery
- Vein
- Circulation