Discuss the differences in the mechanics of respiration. Mammals have a sheet of muscle called a diaphragm that is attached to the ribs and the bottom of the lungs. When the diaphragm contracts, it expands the chest cavity and the difference in air pressure sucks air into the lungs. Frogs d...
Compare internal and external respiration. Explain the air pressure differences in and out of the lungs during inspiration and expiration. How and why does the size of the P wave differ from the size of the QRS complex? What is the difference between aerobic and anaerobic exercise? What is th...