During inhalation, the ____.
A)external intercostal muscles relax
B)pressure in the lungs is less than atmospheric pressure
C)diaphragm moves upward and becomes more curved
D)chest cavity volume decreases
E)lung pressure increases

Question

Quizplus · Accepted Answer

During inhalation, the pressure in the lungs decreases to allow air to flow in, making it less than atmospheric pressure. This is because the diaphragm contracts and moves downward, and the external intercostal muscles contract, expanding the chest cavity and decreasing the pressure inside the lungs to draw air in.

During Inhalation, the ____