FOCUS QUESTION

How does blood circulate and carry oxygen through the body?

The map breaks this topic into its core concepts, connected by labeled relationships. Each link is written so it can be read as a complete statement — not just an unlabeled line between boxes.

Concepts and relationships

  • Circulatory System centered on Heart.
  • Heart pumps blood into Arteries.
  • Arteries branch into Capillaries.
  • Capillaries drain into Veins.
  • Veins return blood to Heart.
  • Circulatory System transports Blood.
  • Blood carries Oxygen.
  • Lungs adds Oxygen.

How to read this map

Trace the loop from the heart out through arteries to capillaries and back via veins, and see how the lungs add oxygen to the blood.

Learning objectives

  • Order the main blood vessels.
  • Explain the heart’s pumping role.
  • Describe gas exchange in the lungs.
  • Relate structure to circulation.
Review standard: The pathway was checked against standard secondary-school anatomy descriptions. Sources: OpenStax Anatomy & Physiology — The Cardiovascular System.