Bio 1500 Test 4
1. Recall the elevation of Mt. Everest: 8,800-8,900 meters (8,850 to be exact)
2. Recall the reason for 'death-zone' and where a death zone occurs: Insuflcient
oxygen,
3. Recall the migration path of Bar Headed Geese and which feat makes it
remarkable: Elevation at which they fly
4. Know the functions of the mammalian respiratory system: 1. Supply oxygen to cells
2. Rid body of Carbon Dioxide
5. List the steps in mammalian respiration: Air travels down the larynx, through the trachea, and
into the lungs, then air passes through the branching bronchi, and reaches the respiratory bronchioles.
6. Gas Exchange: movement of oxygen from air into blood, and of co2 from blood into air
7. Tidal Volume: The amount of air that moves in and out of the lungs per breath when breathing normally
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, 8. Vital capacity: amount of air moving in and out of the lungs when exercising vigorously
9. alveoli: parts of the lungs across which gases are exchanged
10. Ventilation: movement of air between the outside world the gas exchange surface
11. Describe how the structure of our respiratory system facilitates gas ex-
change: The gas exchange occurs in the lungs between the alveoli and tiny blood vessels called capillaries
12. Explain what residual lung volume refers to and why it exists: *amount of air left in
the lungs after exhaling (this is never exchanged)*
-Prevents lungs from collapsing
-Prevents large fluctuations in respiratory gases
-Keep the alveoli open even after maximum expiration
13. Compare the atmosphere we breathe (at sea level) and the atmosphere in
our lungs, and explain the reason for the difference.: -Atmosphere: PO2= 21 kPa, PCO2= .04
kPa
-Inside of lung: PO2= 13-15 kPa. PCO2= 5-6 kPa
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1. Recall the elevation of Mt. Everest: 8,800-8,900 meters (8,850 to be exact)
2. Recall the reason for 'death-zone' and where a death zone occurs: Insuflcient
oxygen,
3. Recall the migration path of Bar Headed Geese and which feat makes it
remarkable: Elevation at which they fly
4. Know the functions of the mammalian respiratory system: 1. Supply oxygen to cells
2. Rid body of Carbon Dioxide
5. List the steps in mammalian respiration: Air travels down the larynx, through the trachea, and
into the lungs, then air passes through the branching bronchi, and reaches the respiratory bronchioles.
6. Gas Exchange: movement of oxygen from air into blood, and of co2 from blood into air
7. Tidal Volume: The amount of air that moves in and out of the lungs per breath when breathing normally
1/3
, 8. Vital capacity: amount of air moving in and out of the lungs when exercising vigorously
9. alveoli: parts of the lungs across which gases are exchanged
10. Ventilation: movement of air between the outside world the gas exchange surface
11. Describe how the structure of our respiratory system facilitates gas ex-
change: The gas exchange occurs in the lungs between the alveoli and tiny blood vessels called capillaries
12. Explain what residual lung volume refers to and why it exists: *amount of air left in
the lungs after exhaling (this is never exchanged)*
-Prevents lungs from collapsing
-Prevents large fluctuations in respiratory gases
-Keep the alveoli open even after maximum expiration
13. Compare the atmosphere we breathe (at sea level) and the atmosphere in
our lungs, and explain the reason for the difference.: -Atmosphere: PO2= 21 kPa, PCO2= .04
kPa
-Inside of lung: PO2= 13-15 kPa. PCO2= 5-6 kPa
2/3
