Circulatory and Respiratory System

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Across
  1. 3. A muscular organ that pumps blood throughout the body
  2. 7. A type blood vessel that carries blood toward the heart
  3. 8. Lower chamber of the heart. There's a left and a right
  4. 10. A yellowish fluid that is mostly composed of water. It holds blood cells
  5. 11. The process in which oxygen is combined with food (glucose) to release energy
  6. 12. A sheet-like muscle beneath the lungs. It expands and contracts the chest cavity when controlling breathing
  7. 14. A type blood vessel that carries blood away from the heart
Down
  1. 1. A cell fragment that helps form blood clots and stops bleeding
  2. 2. A pair of tubes that branch off the trachea and enter the lungs
  3. 4. The tube that transports air from the throat to the lungs, also known as the windpipe
  4. 5. Air sacs within the lungs where gases are exchanged between the lungs and the blood
  5. 6. Sacs within the lungs where gases are exchanges between the lungs and the blood.
  6. 9. A tiny blood vessel that connects an artery to a vein. It also exchanges substances such as gases and nutrients with the blood and the body cells
  7. 13. Upper chamber of the heart. There's a left and a right