homeostasis crossword

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Across
  1. 3. A large airway that leads from the trachea (windpipe) to a lung
  2. 4. a muscle that separates the chest from the abdomen and helps with breathing
  3. 7. A tiny branch of air tubes in the lungs
  4. 8. he space inside the nose, divided into two nasal passages by the nasal septum, and forms the uppermost part of the respiratory system
Down
  1. 1. a tube that carries air from the voice box to the lungs
  2. 2. system takes up oxygen from the air we breathe and expels the unwanted carbon dioxide
  3. 5. A tube through which the blood circulates in the body
  4. 6. body's way keeping everything in balanced