Cassie M. Lawton 
Human Respiratory System [PDF ebook] 

The human respiratory system is what makes people able to breathe. This detailed guide explains what the respiratory system is, how it works, and the key organs used in its processes. Fun fact boxes, vivid photographs and diagrams, and accessible language paint a detailed picture of the respiratory system and highlight its importance for human life. Readers are also asked to think independently about life science through discussion questions based on the informative narrative.