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6 Cards in this Set

  • Front
  • Back
Inhaling
Diaphragm contracts
External Intercostal Muscles contract
Volume of chest cavity increases
Pressure in lungs drop lower than atmospheric pressure
Air diffuses into lungs
Exhaling
Diaphragm relaxes
External Intercostal Muscles relax
Volume of chest cavity increases
Pressure in lungs higher than atmospheric pressure
Air diffuses out of lungs
Why do organisms need special exchange surfaces?
So that they can get:
Oxygen for respiration
Glucose as a source of energy
Proteins for growth and repair
Fats to make membranes and be a store of energy
water
Minerals to maintain their water potential, help enzyme action and other aspects of metabolism
Muscle's...
Contract.
Airway's...
Constrict.
Golgi Complex
F: Modify proteins and ship to in/outside cell