Multiple choice

Which of the following takes place during the process of exhalation?

  1. Rib cage contracts

  2. Lung expands

  3. Diaphragm lowers down

  4. Oxygen moves out

  5. All of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

 When the diaphragm moves up, the ribcage contracts. This leads to contraction of the lungs. As a result, the air moves out of the lungs. This process is called expiration or exhalation.

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