Circulatory & Respiratory System

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Across
  1. 3. When plaque builds up on the inside of arteries.
  2. 5. When the heart beats too fast.
  3. 6. We have 5 liters of this liquid in our body.
  4. 7. Allow blood to flow in only one direction.
  5. 8. When the heart beats too slow.
Down
  1. 1. Pumps blood throughout the body.
  2. 2. They carry oxygen or carbon dioxide and nutrients away from the heart.
  3. 3. Abnormal rhythm of the heart.
  4. 4. They connect arteries and veins.
  5. 7. Little blood tunnels that carry oxygen, carbon dioxide, and nutrients to the heart.