At the Doctor's Office, You May Have Noticed That When

question 87

Multiple Choice

At the doctor's office, you may have noticed that when you are asked to "breathe deeply," your chest rises and falls and expands more dramatically than when you are breathing normally. Why?

• A)Your intercostal muscles are being used to expand your chest cavity.
• B)Your spiracles are being used to expand your chest cavity.
• C)Your air sacs are being used to expand your chest cavity.
• D)Your bronchioles are being used to expand your chest cavity.

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