Topic 8 – Exchange and Transport
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18 Terms
Surface Area to Volume Ratio
SA to V affects exchange efficiency
Large size effect
Large organisms need exchange systems
Exchange adaptations
Exchange surfaces have large area and thin walls
Alveoli
Alveoli are the site of gas exchange
Gas exchange
Gas exchange occurs by diffusion
Heart
The heart pumps blood
Double circulation
Blood passes through the heart twice
Artery
Arteries carry blood away
Vein
Veins return blood
Capillary
Capillaries allow exchange
Red Blood Cells
Red cells carry oxygen
White Blood Cells
White cells defend against pathogens
Platelets
Platelets clot blood
Plasma
Plasma transports substances
Aerobic respiration
Aerobic respiration releases energy with oxygen
Anaerobic respiration
Anaerobic respiration releases less energy
Oxygen debt
Oxygen debt removes lactic acid
Note 
Flashcards (20)