What happens to the Thoracic cavity when diaphragm muscles contract?

1.	What happens to the Thoracic cavity when diaphragm muscles contract?
Answer» Answer: When the diaphragm contracts, it moves inferiorly TOWARD the ABDOMINAL cavity, CREATING a larger thoracic cavity and more space for the lungs. Contraction of the external intercostal muscles moves the ribs upward and OUTWARD, causing the rib cage to expand, which increases the VOLUME of the thoracic cavity.

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Answer:

When the diaphragm contracts, it moves inferiorly TOWARD the ABDOMINAL cavity, CREATING a larger thoracic cavity and more space for the lungs. Contraction of the external intercostal muscles moves the ribs upward and OUTWARD, causing the rib cage to expand, which increases the VOLUME of the thoracic cavity.

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What happens to the Thoracic cavity when diaphragm muscles contract?

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