Respiratory system

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Across
  1. 1. leaf-shaped piece of elastic cartilage that is a portion of the larynx that swings to close the trachea during swallowing
  2. 3. small, grape-like sac that performs gas exchange in the lungs
  3. 6. tube connected to the trachea that branches into many subsidiaries and provides a passageway for air to enter and leave the lungs
  4. 8. concave structure on the mediastinal surface of the lungs where blood vessels, lymphatic vessels, nerves, and a bronchus enter the lung
  5. 10. branch of bronchi that are 1 mm or less in diameter and terminate at alveolar sacs
Down
  1. 2. tube composed of cartilaginous rings and supporting tissue that connects the lung bronchi and the larynx; provides a route for air to enter and exit the lung
  2. 4. process that causes the air to leave the lungs
  3. 5. cartilaginous structure that produces the voice, prevents food and beverages from entering the trachea, and regulates the volume of air that enters and leaves the lungs
  4. 7. region of the conducting zone that forms a tube of skeletal muscle lined with respiratory epithelium; located between the nasal conchae and the esophagus and trachea
  5. 9. organ of the respiratory system that performs gas exchange)