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Which of the following best summarizes the function of the respiratory system?

A. to transport oxygen to cells and wastes away from cells.
B. to protect the organs in the chest cavity
C. to move oxygen from the air into the body and carbon dioxide from the body into the air
D. to provide a barrier between the body and the environment

C**

Which of the following is not true about the structure of an alveolus?

A. it has thick walls to trap gases that enter during breathing.
B. it has high surface area to allow lots of gas exchange.
C. it has a high concentration of oxygen and a low concentration of carbon dioxide.

!@#$%^&

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  1. they are all right:)

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    posted by TTR+S<3
  2. Thank You!

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  3. alveolus has high surface area to allow lots of gas exchange

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    posted by Damon
  4. Good Job

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  5. njhhgjghu

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    posted by j
  6. I dont really advise coming to these kind of sites for science help because most people call it cheating but i understand why you would want to i mean come on connexus assigns a crap tone of skewlwork.

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    posted by Chicken
  7. Pneumonia is a disease that causes fluid to build up in the alveoli of the lungs. Which of the following would you expect to be impaired in patients with pneumonia?

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    posted by Gabe
  8. Chicken~
    IKRRRR

    also my cat's name is chicken 0>0

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    posted by me
  9. that's cool me

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    posted by big pump

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