Gas exchange in the lungs takes place in tiny air sacs called:
Correct answer: C. Alveoli
Oxygen passes from the alveoli into the blood, and carbon dioxide passes out of the blood into the alveoli to be breathed out.
easy
Answer and explanation
The correct answer is C. Alveoli
Oxygen passes from the alveoli into the blood, and carbon dioxide passes out of the blood into the alveoli to be breathed out.
Topic: Human Body and Health MCQs · Subject: Everyday Science