At this very creative site students will love learning about the function of their lungs. Fully illustrated with diagrams and new vocabulary words. Available in Spanish.

To gain a better understanding of the roles and functions of components of the human respiratory system and our need for clean air, students construct model lungs that include a diaphragm and chest cavity. They see how air moving in and...

For an organism to function, substances must move into and out of cells. Three processes contribute to this movement - diffusion, osmosis and active transport. Diffusion is the process by which useful materials and waste products move in...

An introductory slide show explaining the structure and function of the human respiratory system.

Students are introduced to the respiratory system, the lungs and air. They learn about how the lungs and diaphragm work, how air pollution affects lungs and respiratory functions, some widespread respiratory problems, and how engineers...

Explore the anatomy of the human body. Click on an organ or other body part to read more about its structure and function, and then try out an interactive activity for that organ.

The mechanics of lung function are explained. Numerous definitions and examples are provided including Poiseuille's Law, blood flow, ventilation, and fluid mechanical properties.

The University of Arizona's Biology Project provides background information on toxic materials and the body's responses as well as interactive tutorials with assessment questions and an activity in which students can actually acquire and...