At which point in the respiratory cycle is thoracic volume the smallest?
A)At end inhalation
B)With contraction of the diaphragm
C)With contraction of the external intercostals
D)At end of exhalation

Question

Quizplus · Accepted Answer

At the end of exhalation, the thoracic volume is the smallest as the diaphragm and intercostal muscles are relaxed, and the lungs are at their most contracted state.

At Which Point in the Respiratory Cycle Is Thoracic Volume