Final answer:
Arteries/arterioles, capillaries, and veins/venules are placed in order from highest to lowest blood pressure.
Step-by-step explanation:
The vessels in order from highest blood pressure to lowest blood pressure are:
1. Arteries/arterioles
2. Capillaries
3. Veins/venules
Arteries/arterioles have the highest blood pressure because they receive blood directly from the heart. Capillaries have lower blood pressure since their walls are thin and they allow for exchange of substances with tissues. Veins/venules have the lowest blood pressure as they transport blood back to the heart.