This printable crossword puzzle on the topic of Human Body Systems has 14 clues. Answers range from 4 to 11 letters long. This crossword is also available to download as a Microsoft Word document or a PDF.
Flap of tissue that closes off the air way when swallowing food
Major airway leading to the chest
The tubes carrying air into each lung
The tubes that the bronchi divide into when they enter each lung
Tiny unit that is responsible for exchanging gases
Muscle that changes the volume of the chest cavity when breathing
Bones that protect the heart and lungs
Air can be inhaled through this also
The type of pressure with in the chest when we breathe out
Another word for breathing out
Term used to describe how gases are exchange in the alveoli
The direction the diaphragm moves when inhaling
Another term for the voicebox
The smallest blood vessels that cover the alveoli