Question

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

Answer 1

I agree with C and A

Answer 2

thanks sooooo much I love jiska it helps so much

Answer 3

Which best summarizes organ systems?

Answer 4

is that the correct answer??

Answer 5

thx

Answer 6

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.

Answer 7

@Student/// is 100% correct thank you so much :)

Answer 8

Thx i got a 100 to. 👏👏👏😎