Respiratory system crossword !!

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Across
  1. 3. a small hole at the entrance of the nose
  2. 4. two saclike respiratory organs in the thorax of humans and the higher vertebrates.
  3. 7. a little hollow, as the socket of a tooth, a follicle of an acinous gland, or a pulmonary alveolus
  4. 9. a large, air-filled space above and behind the nose in the middle of the face.
  5. 11. a cartilaginous tube that connects the pharynx and larynx to the lungs, allowing the passage of air
  6. 12. one of the three fundamental states of matter
Down
  1. 1. the smaller branches of the bronchial airways in the respiratory tract
  2. 2. the part of the throat behind the mouth and nasal cavity, and above the esophagus and larynx – the tubes going down to the stomach and the lungs.
  3. 5. the lining of the nasal passage with mucous membranes and hair-like structures
  4. 6. a biological system consisting of specific organs and structures used for gas exchange in animals and plants.
  5. 8. the process of inhaling and exhaling gas
  6. 10. voice box, Below the pharynx and at the upper end of the trachea