Respiratory systems are different in worms, fish, and human lungs, and each are explained by Paul Andersen with his fabulous SMART Board. How are these respiratory systems similar? Keeping breathing surfaces moist is essential in all...

By detailing the percentages of gases in the air we breathe, the lecturer instructs on respiration and the need for oxygen. He also recaps the structure of alveoli in our lungs and how they interact to allow gas exchange with our blood.

The oxygen needed by our bodies to burn during respiration of glucose is obtained by ventilation. The anatomical structures involved in gaseous exchange are drawn and labeled. The explanations are excellent for a review or a student with...

Watch as the Khan Academy explains why red blood cells are efficient carriers of hemoglobin and explains the difference between pulmonary arteries and veins. This thorough video, complete with excellent explanations and diagrams, will...

Intersperse your viewing of this video with questions that are shown on the screen. Keep your learners engaged by having them take notes and answer the questions. Parts of the respiratory system are shown with pictures and animation...

Diagrams and video footage of people help show the structures and functions of the respiratory system. Exercise is highlighted, making this an accessible video for a health class.