Includes index.

Human body systems -- What is the respiratory system? -- Respiratory system features -- How does the respiratory system work? -- The nose and nasal cavity -- The mouth and pharynx -- The larynx and trachea -- The bronchi and lungs -- Keeping healthy -- Studying the respiratory system -- Working together -- Careers -- The respiratory system quiz.

"Respiratory System guides readers through the fascinating inner workings of the human body. The human body contains several complex systems that work closely together to support life and allow the body to function properly. Respiratory System explores the characteristics and interactions of this system, its makeup, and its importance"--

Grades 4 to 6.