The educational objectives this program focuses on are to help students understand these key concepts: the structure of the lungs, exchange of gas in the lungs, ventilation of the lungs, the structure of the heart, how the heart works as a pump, the different structure of arteries and veins, the role of the skeleton in providing support, protection and anchorage for muscles, the importance of bone marrow, and the importance of calcium in giving strength to bones.

Originally released by Benchmark Media, 2009. Streaming video file encoded with permission for digital streaming by Infobase on April 30, 2015.

The Lungs (5:34); --The Heart (5:26); -- The Skeleton (4:26); .