Multiple choice

What does the circulatory system do?

  1. brings oxygen into the body and removes carbon dioxide

  2. removes waste

  3. keeps you healthy

  4. none of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The respiratory system brings oxygen into the body, but the circulatory system is responsible for transporting this oxygen to cells and carrying carbon dioxide back to the lungs to be removed. In simplified contexts, this gas exchange and transport process is often described as a combined effort of both systems.

Keep practicing — related questions