Gas exchange in the lungs Student activity Play

Gas exchange in tissues Animation Play

General structure of the circulatory system and location of the heart Student activity Play

Grouping of species into larger units Student activity Play

Human respiratory system Slideshow Play

Human respiratory system Slideshow Play

Internal structure of vertebrates Slideshow Play

Life on land Whiteboard presentation Play

Life on land Class activity Play

Lung diseases caused by smoking Slideshow Play

Lung of a smoker Illustration Play

Lung structure Student activity Play

Lungs Illustration Play

Lungs Illustration Play

Lungs Illustration Play

Lungs and trachea Illustration Play

Lungs of vertebrates Slideshow Play

Mammals Student activity Play

Mammals Whiteboard exercise Play

Modes of gas exchange in organisms Slideshow Play

Movement Animation Play

Movement in water Animation Play

Nervous and chemical regulation of respiratory movements Student activity Play

Nuclear radiation and live organisms Illustration Play

Nuclear radiation and live organisms Student activity Play