Muscles between the ribs contract, pulling the rib cage up and out.
It is the first step in the gas exchange process, followed by exhalation, which removes carbon dioxide ( CO2cap C cap O sub 2 Factors Affecting Inhalation ms inhale
In conditions like Multiple Sclerosis (MS), muscle weakness can impair the diaphragm and chest muscles, resulting in shallow breathing or breathing difficulties. Muscles between the ribs contract, pulling the rib
How the Lungs Work - What Breathing Does for the Body - nhlbi - NIH Muscles between the ribs contract
The diaphragm (the muscle below the lungs) contracts and moves downward, flattening out.