This printable word search puzzle on the topic of Human Body Systems contains 22 hidden words in a 24x24 letter grid. Words go horizontally, vertically, backwards, and diagonally. This word search is also available to download as a Microsoft Word document or a PDF.
intercostalmuscles
carbondioxide
bronchioles
diaphragm
breathing
contract
windpipe
alveolus
bronchus
deflate
inflate
trachea
expand
exhale
inhale
oxygen
blood
mouth
lungs
nose
ribs
air