respiratory system Crossword

This printable crossword puzzle on the topic of Human Body Systems has 15 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 two branches of the trachea
the group of tiny air sacs
strong breathing muscle
the 4 chambered organ
what we use to breathe
protects the heart and lungs
what we breathe in
to breathe out
to breathe in
the tiny hairs that clean the air
the tube that connects the throat and bronchi
contains the vocal cords
region behind the nose leading to the throat
air comes into your lungs through bronchial
what we breathe out