Four of the five answers are correct statements about breathing. Select the exception.
A)During inhalation, the chest cavity expands.
B)Inhalation is powered in part by the diaphragm.
C)Muscles in the walls of the lungs aid in enlarging the lung volume.
D)During exhalation, the diaphragm moves upward.
E)A respiratory cycle is one breath in (inhalation) and one breath out (exhalation).

Question

Quizplus · Accepted Answer

Muscles in the walls of the lungs do not aid in enlarging the lung volume directly. The enlargement of the lung volume during inhalation is primarily due to the movement of the diaphragm and the muscles of the chest wall, not muscles within the lung walls themselves.

Four of the Five Answers Are Correct Statements About Breathing