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Respiratory System (Grade 8)

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Respiratory System

1. 
Breathing occurs in a predictable series of steps. First, air flows from the                        or                  through the                                      (which is located at the back of the throat). Then, the air moves through the                      , a long pipe like structure, to the                      where the air is further moved to the location where gas transfer occurs, the                       , small air sacs located in the lungs.
2. 
What word best describes the function of the trachea?
  1. Pumping station
  2. Entrance point
  3. Muscle
  4. Passageway
3. 
What is the "pipe" between the mouth and stomach called?
  1. epiglottis
  2. trachea
  3. esophagus
  4. appendix
4. 
The membrane on the surface of the lungs is called the
  1. epidermis
  2. sagittal
  3. visceral pleura
  4. macromolecule
5. 
What are the increasingly smaller airways branching off into the lungs called?
  1. air sacs
  2. bronchial tubes
  3. capillaries
  4. lungs
6. 
What are the bubble-shaped sacs in the lungs where gas exchange takes place called?
  1. capillaries
  2. bronchial tubes
  3. alveoli
  4. lungs
7. 
When a human inhales, the air pressure in the chest cavity
  1. remains the same, allowing both pressures to be equal
  2. increases, allowing lungs to expand
  3. decreases, allowing outside air to flow into the lungs
  4. there is no air pressure in your chest cavity
8. 
Where does the transfer of oxygen into the bloodstream take place?
  1. In the heart
  2. In the trachea
  3. In the alveoli
  4. In the nasal passages
9. 
How can one prevent emphysema, a well-known lung disease?
  1. By maintaining a healthy diet
  2. By exercising consistently
  3. By abstaining from smoking
  4. By taking vitamins
10. 
What is the function of the respiratory system?



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