15(1) Respiratory System

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Across
  1. 3. A pulmonary embolism is a blockage of a branch of a pulmonary ______.
  2. 5. Chamber shared by the respiratory and digestive system.
  3. 7. Parasympathetic activation contracts muscle, causing ______________.
  4. 8. __________ activation relaxes muscle, causing bronchodilation.
Down
  1. 1. The upper respiratory system filter, warm, and _______ incoming air.
  2. 2. Inelastic upper pair of ligaments.
  3. 4. A cartilage of the larynx that prevents entry of liquids and food into respiratory tract.
  4. 6. These are the air-filled pockets where gas exchange occurs.