Lung Videos" Assignment Discovery: Whale Lungs Whales have relatively small lungs, but they are very efficient.
They also hold oxygen in their muscles and release it slowly. Learn more about whale anatomy on Discovery Channel's "Assignment Discovery. " Know Your Body - Respiratory System. Untitled. Respiratory system - quiz Summary Breathing, oxygen, the lungs and the diaphragm are all important parts of the human respiratory system.
Test your knowledge with our quiz. You might also be interested in: Respiratory System.