This printable word search puzzle on the topic of Human Body Systems contains 20 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.
gaseous exchange
pleural membrane
carbondioxide
blood vessels
respiratory
chest wall
diaphragm
bronchus
trachea
airflow
alveoli
oxygen
tissue
muscle
airway
larynx
cilia
heart
lung
rib