Includes bibliographical references (p. 31) and index.
Contents:
What is my heart? -- What is my circulatory system? -- What is blood? -- What are blood cells? -- What does my heart do? -- How does my heart work? -- What are blood vessels? -- What do my arteries do? -- What do my capillaries do? -- What do my veins do? -- Why is blood moved back to my heart? -- The circulatory system -- Why does my heart beat? -- Did you know?
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