This printable crossword puzzle on the topic of Human Body Systems has 13 clues. Answers range from 6 to 13 letters long. This crossword is also available to download as a Microsoft Word document or a PDF.
Air flows in/out of here
Warms/moistens air, hairs filter out unwanted particles
The throat
Voice box, air flows past the vocal chords producing sound
Cartilage tube that carries air to the lungs
Smaller than the other one to make room for the heart, only has 2 lobes
The trachea splits into 2 _______, which lead to a lung each
Smaller branches of the bronchi
Site of gas exchange, tiny sacs only 1 cell thick
Flat, sheet-like muscle that contracts during inspiration/relaxes during expiration
This gas is used to make ATP during cellular respiration
This gas is a waste-product of cellular respiration
A word that means a reaction occurs in the presence of oxygen