The Heart

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Across
  1. 2. Opening in the heart that allows blood to flow either in or out
  2. 3. How many quarts of blood an adult heart pumps per minute
  3. 5. The upper chambers of the heart
  4. 6. The size of a child's heart
  5. 7. The fluid that flows through your heart
  6. 8. The wall of muscle that separates the left and right sides of the heart
Down
  1. 1. Blood is 78 percent _____
  2. 2. The lower chambers of the heart
  3. 4. The term used for when the heart contracts, pushing blood throughout the body