The Respiratory System

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Across
  1. 2. The nose contains two nasal ________, separated from one another by a septum.
  2. 5. Hollow spaces in nose; filter, warm and moisten air.
  3. 8. A person with __________ has a reduced amount of respiratory membrane.
  4. 9. The entrance and exit of air into and out of the lungs.
  5. 12. Where the oral cavity joins the pharynx.
  6. 13. Air sacs that branch from bronchioles; passage of into and out of pulmonary capillaries.
Down
  1. 1. Also known as your voicebox.
  2. 3. Infection of the primary and secondary bronchi.
  3. 4. The respiratory system converts _______ to carbon dioxide.
  4. 6. Paired tubes that enter the lungs; passage of air to lungs.
  5. 7. The basic rhythm of ventilation is controlled by a primary respiratory center located in the _________.
  6. 10. The maximum volume of air during a single breath is called the _________.
  7. 11. _________ may be done if the trachea is blocked by making an incision in the trachea.