Gas+Exchange+and+Respiration

Diagrams to Know:
 * 1) media type="youtube" key="BTuzGBPEqbA" height="315" width="560"
 * 2) Define gas exchange and distinguish between a respiratory medium and a respiratory surface.
 * 3) Describe the general requirements for a respiratory surface and list a variety of respiratory organs that meet these requirements.
 * 4) Describe the advantages and disadvantages of water as a respiratory medium.
 * 5) Describe countercurrent exchange and explain why it is more efficient than the concurrent flow of water and blood.
 * 6) Describe the advantages and disadvantages of air as a respiratory medium and explain how insect tracheal systems are adapted for efficient gas exchange in a terrestrial environment.
 * 7) For the human respiratory system, describe the movement of air through air passageways to the alveolus, listing the structures that air must pass through on its journey.
 * 8) Distinguish between tidal volume, vital capacity, and residual volume.
 * 9) Explain how the respiratory systems of birds and mammals differ.
 * 10) Explain how breathing is controlled in humans.
 * 11) Define partial pressure and explain how it influences diffusion across respiratory surfaces.
 * 12) Draw the Hb-oxygen dissociation curve, explain the significance of its shape, and explain how the affinity of hemoglobin for oxygen changes with oxygen concentration.
 * 13) Describe how carbon dioxide is picked up at the tissues and deposited in the lungs.
 * 14) Describe respiratory adaptations of diving mammals and the role of myoglobin.

Good Animation of Gas Exchange and Quiz to take: []