What would a graph of internal lung pressure compared to atmospheric pressure look like during one inhalation/exhalation cycle in a frog?
A)A
B)B
C)C
D)D

Question

What would a graph of internal lung pressure compared to atmospheric pressure look like during one inhalation/exhalation cycle in a frog? 
A)A 
B)B 
C)C 
D)D

Quizplus · Accepted Answer

During inhalation in a frog, the internal lung pressure becomes negative relative to atmospheric pressure, allowing air to flow into the lungs. This is represented by the dip in the graph shown in option C. During exhalation, the internal lung pressure becomes positive relative to atmospheric pressure, pushing air out of the lungs. This is shown by the peak in the graph. Therefore, option C accurately represents the change in pressure during one inhalation/exhalation cycle in a frog.

What Would a Graph of Internal Lung Pressure Compared to Atmospheric