Which of the following actions does not occur during exhalation in man?
-
A.
Thoracic cavity decreases in volume -
B.
Diaphragm flattens -
C.
Ribs move down and in -
D.
Air pressure increases in the thoracic cavity
Correct Answer: Option B
Explanation
When you breathe in, or inhale, your diaphragm tightens and moves downward (flattens).