Question

Which of the following is an example of how the respiratory system interacts with the circulatory system to excrete waste?

A. The veins carry blood from different parts of the body to the heart, and the lungs exhale the carbon dioxide.



B.The arteries carry blood from different parts of the body to the heart, and the lungs exhale the carbon dioxide.



C. The veins carry oxygen-rich blood to the different parts of the body, and the arteries carry carbon dioxide-rich blood to the heart.


D.The arteries carry oxygen-rich blood to the heart, and the veins carry blood from the lungs to the different parts of the heart.

Answer 1

We do not use carbon dioxide to fuel our blood cells. It is a waste.

Arteries move blood from the heart to the rest of the body.

Veins carry the blood to the heart to be oxidized. 

"D" is not correct. 

"B" is not correct.

We know that veins carry blood to the heart, lungs exhale carbon dioxide. 

"A" is the correct answer.

I hope this helps!
~kaikers

Answer 2

The answer is A, because the veins carry oxygen depleted blood away from body parts; hence the color blue.