Question

fill in the blank question
the three basic types of blood vessels are , and veins.

Explanation:

In human anatomy, the three basic types of blood - vessels are arteries, capillaries, and veins. Arteries carry oxygen - rich blood away from the heart, capillaries are the sites of gas and nutrient exchange, and veins carry deoxygenated blood back to the heart.

Answer:

arteries, capillaries