2 doctors weighed in:

Docs, when thoracic volume changes due to movement of the diaphragm, what leads to the lungs to move?

2 doctors weighed in
Dr. William Singer
Pediatrics - Neurology
1 doctor agrees

In brief: Bellows action

The volume of the lungs changes with the movement of the diaphragm. This is like a bellows action.
As the diaphragm moves down, the lungs expand, while diaphragm moves up, air is released from the lung. The movement of the lung is a passive movement due to action of the diaphragm.

In brief: Bellows action

The volume of the lungs changes with the movement of the diaphragm. This is like a bellows action.
As the diaphragm moves down, the lungs expand, while diaphragm moves up, air is released from the lung. The movement of the lung is a passive movement due to action of the diaphragm.
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