The human respiratory system

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Across
  1. 4. What flexible tissue supports the trachea and prevents it from collapsing?
  2. 6. What type of respiration uses oxygen to release energy from glucose?
  3. 7. What is the name of each of the two main tubes that carry air from the trachea into the lungs?
  4. 8. What are the small airways that branch from the bronchi and lead to the air sacs?
Down
  1. 1. Which structures vibrate to produce sound when air passes through the larynx?
  2. 2. What is another name for the trache
  3. 3. What chemical process in cells releases energy from glucose Respiratory system – Which body system is responsible for taking in oxygen and removing carbon dioxide? Trachea – What tube carries air from the larynx towards the two bronchi?
  4. 5. What is another name for the larynx?
  5. 6. What tiny structure in the lungs is the main site of gas exchange?
  6. 9. Which organ in the throat contains the vocal cords?