Question:
When the diaghragm contracts, it and the thoracic cavity. a.
Last updated: 8/8/2022
![When the diaghragm contracts, it and the thoracic cavity. a.](https://media.kunduz.com/media/sug-question/raw/82284566-1659971929.055108.jpeg?h=512)
When the diaghragm contracts, it and the thoracic cavity. a. Rounds out, expands b. Flattens out, expands c. Flattens out, compresses d. Rounds out, compresses