Science Common Sense

131 - How does the circulatory system work?

The circulatory system is like a delivery truck for your body. It has three main parts:

  1. Heart: It's like the truck depot where blood is collected and distributed.
  2. Blood: It's the delivery truck that carries oxygen and nutrients to all parts of your body.
  3. Blood Vessels: They're like the roads that the delivery truck (blood) travels on.

Here's how it works:

  1. The heart pumps blood (delivery truck) from the depot (heart) into the main roads (arteries).
  2. The blood carries oxygen and nutrients to all parts of your body through smaller roads (capillaries).
  3. The blood picks up waste from your body and carries it back to the depot (heart) through other roads (veins).
  4. The heart then pumps the blood to the lungs to pick up more oxygen.
  5. The cycle starts all over again, keeping your body healthy and strong.

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