The Respiratory System Crossword

This printable crossword puzzle on the topic of Human Body Systems has 11 clues. Answers range from 4 to 13 letters long. This crossword is also available to download as a Microsoft Word document or a PDF.

the tube that connects the throat and the lungs
the grape-like clusters of air sacs within the lungs
the large band of muscle that controls the size of the chest cavity
the two large respiratory organs
the two branches of the windpipe
place where air enters
slimy substance that coats the nasal passages and catches dirt & bacteria
breathe air in
breathe air out
the gas our bodies need
the waste gas our bodies produce