Heart & Blood Circulation
Describe the circulatory system in detail: the heart has four chambers (two atria, two ventricles) that pump blood in a double loop — one to the lungs for oxygen and one to the rest of the body to deliver it — through arteries, veins, and tiny capillaries
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Check understanding
- Name the four heart chambers and describe the double-loop pathway (heart → lungs → heart → body)
- Distinguish arteries (carry blood away from heart), veins (carry blood back to heart), and capillaries (tiny vessels where exchange happens)
- Name the components of blood: red blood cells (carry oxygen), white blood cells (fight infection), platelets (help clotting), plasma (liquid)
“Can your child trace the path blood takes through the heart and body — explaining that it goes to the lungs first for oxygen, then out to the rest of the body?”
Curriculum record
- Type
- Conceptual
- Subject
- Science
- Domain
- The Human Body
- Age range
- Ages 9–11