Answer:
1. Veins are sometimes called _blood_ vessels because of their capacity for storing blood.
2. __Arteries__ are vessels that carry blood away from the heart..
3. _Capillaries _ are exchange vessels where nutrients, wastes, and hormones are transferred between blood and the interstitial fluid of the tissues.
4. _Veins_ are vessels that return blood to the heart.
Step-by-step explanation: