Respiratory System Crossword

This printable crossword puzzle on the topic of Human Body Systems has 12 clues. Answers range from 6 to 11 letters long. This crossword is also available to download as a Microsoft Word document or a PDF.

air sacs where gaseous exchange takes place
sheet of muscle under the lungs/ribs
voice box
breathing in
breathing out
A part of the CV system that takes O2 and gives Co2 back
name of the muscle in between each rib
the main aim of the respiratory system
exercising with oxygen eg long distance running
exercising without oxygen eg sprinting
carries O2 and Co2 in blood cells
The main branch in to each lung where air travels