5. Oxygen Solubility Water severely limits oxygen solubility
Animals Evolve:
Respiratory Structures
Lungs
Gills
Skin
Air-breathing organs
Mouth, guts, gas bladder, etc.
Circulatory System
Environment dictates the types of adaptations

6. Will Discuss Dead Zone vs Oxygen Minimum Zone Later

8. Oxygen Consumption Cardiac output x arterial-venous differences
Cardiac output: heart rate x stroke volume
Arterial-venous differences
Dependant on activity state
Properties of the blood

11. Convection
Diffusion

12. Gas Delivery Diffusion through the ectoderm Open circulatory system
Cell surface as the exchange site
Limits the size of the organism
Open circulatory system
Mollusk and arthropods
Blood in hemocoel
Sluggish flow
Closed circulatory system
Blood contained within the vessels
Pigments in the blood
Myoglobin in hagfish
Hemoglobin for the rest
Active flow

13. Blood Circulation To deliver To remove Nutrients Oxygen Hormones
Metabolic waste
Pathogens
Carbon dioxide
Hydronium ions
Temperature
Organic phosphate

14. No circulatory system to open and closed system

16. Temperature

17. Terminology
Gas Content : mL/L
Partial Pressure: torr