Respiration Crossword

This printable crossword puzzle on the topic of Human Body Systems has 21 clues. Answers range from 3 to 24 letters long. This crossword is also available to download as a Microsoft Word document or a PDF.

Air passage to lungs
Connects mouth and nose to esophagus
Minute branches in lungs
How oxygen gets to all the cells of the body
The part of the brain that controls respiratory systems
The muscle that controls airflow
Air passage from the larynx to the bronchioles
Breathing in
The key of respiration
Major air passages of the lungs
Breathing
Breathing out
Greatest volume of air that can be expelled from the lungs
Protects food from entering windpipe
The action of breathing
Emergency procedure that keeps the lungs and heart going when the brain doesn't
When the body doesn't have enough air
Protects lungs
Little hairs within nose to decrease harmful molecules from entering the body
Connects pharynx to larynx
air sacs within lungs