Respiratory system
Across
- 1. leaf-shaped piece of elastic cartilage that is a portion of the larynx that swings to close the trachea during swallowing
- 3. small, grape-like sac that performs gas exchange in the lungs
- 6. tube connected to the trachea that branches into many subsidiaries and provides a passageway for air to enter and leave the lungs
- 8. concave structure on the mediastinal surface of the lungs where blood vessels, lymphatic vessels, nerves, and a bronchus enter the lung
- 10. branch of bronchi that are 1 mm or less in diameter and terminate at alveolar sacs
Down
- 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
- 4. process that causes the air to leave the lungs
- 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
- 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
- 9. organ of the respiratory system that performs gas exchange)