The Respiratory System Crossword

This printable crossword puzzle on the topic of Human Body Systems has 10 clues. Answers range from 4 to 9 letters long. This crossword is also available to download as a Microsoft Word document or a PDF.

What gets exchanged for carbon dioxide in the pulmonary capillaries surrounding the alveoli?
How many lobes does the right lung have?
What structure permits air exchange?
What structure helps the lungs breathe in and out?
What happens to the diaphragm when we breathe in?
What happens to the chest during inspiration?
What is the pipe-like structure surrounded by cartilaginous rings?
What structure protects the lungs?
What does the trachea divide into?
Which lung only has 2 lobes to allow space for the heart?