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 (I'm thinking about A)
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.
A
If you are from connexus dec.2019:
1.D
2.C
3.A
4.B
5.A
Just took it and got 100% :)
I promise these are correct.
I agree with C and A
thanks sooooo much I love jiska it helps so much
thx
@Student/// is 100% correct thank you so much :)
Which best summarizes organ systems?
is that the correct answer??
Thx i got a 100 to. 👏👏👏😎
To determine the correct answer, let's evaluate each option:
A. The statement says that alveoli have thick walls to trap gases that enter during breathing. However, this statement is not true. Alveoli have thin walls that allow for easy gas exchange, rather than trapping gases.
B. The statement claims that an alveolus has a high surface area to allow for lots of gas exchange. This statement is true. Alveoli have a large surface area, which facilitates efficient exchange of gases between the lungs and the bloodstream.
C. The statement states that an alveolus has a high concentration of oxygen and a low concentration of carbon dioxide. This statement is also true. During gas exchange in the lungs, oxygen diffuses into the bloodstream from the alveoli while carbon dioxide moves from the bloodstream into the alveoli, resulting in a higher oxygen concentration and a lower carbon dioxide concentration in the alveoli.
Therefore, option A is the answer since it incorrectly states that alveoli have thick walls to trap gases. Option A is not true about the structure of an alveolus.