Which of the following does not occur when air enters the lungs?
A. The diaphragm flattens.
B. The amount of space in the thoracic cavity increases.
C. The diaphragm relaxes.
D. Thoracic pressure decreases.
E. The intercostal muscles raise the ribs.
Answer: C
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Which is maintained by the Food and Drug Administration (FDA) and identifies prescription drugs and some over-the-counter products?
a. CDT b. ICD c. NDC d. NSF
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