The 3 kinds of blood vessels are the arteries, veins and the capillaries.
Therfore, 4. Arteries 5. Veins and 6. Capillaries
Explanation:
Arteries — made of thick walls and are adapted to carry high pressure blood away from the heart
Veins — veins are responsible to carry the blood to the heart. The venous walls are thinner and contain less muscle and elastic tissue.
Capillaries — the capillary wall consists of a single layer of epithelial cells. The blood flow in the capillary is controlled by a precapillary sphincter. It is also in the capillary where gases, nutrients, and metabolic by products are exchange between the capillary blood and tissue fluid.
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