Question

click and drag on elements in order
arrange the three classes of arteries in order from smallest (top) to largest (bottom).
① instructions
distributing arteries
resistance arteries
conducting arteries

Explanation:

To solve this, we recall the sizes of artery classes: Resistance arteries (smallest, regulate blood flow/resistance), then Distributing arteries (medium, distribute blood to organs), then Conducting arteries (largest, conduct blood from heart). So order from top (smallest) to bottom (largest) is Resistance arteries, Distributing arteries, Conducting arteries.

Answer:

Top (smallest): Resistance arteries
Middle: Distributing arteries
Bottom (largest): Conducting arteries