Ribs are for protection i think and diaphragm is the muscle controlling inhaling and exhaling.
Also: the rib muscles can help the breathing process, which is useful when the diaphragm is weak, constricted, or to get an extra-big breath.
Breathing from the diaphragm makes the belly move in and out as the lungs extend downwards.
Breathing from the rib muscles makes the chest expand and rise.
Diaphragm
diaphragm
diaphragm....
They provide a rigid cage for the action of the diaphragm to allow the lungs to expand. Without ribs, your chest would simply "suck in" whenever the diaphragm moved down, and you would be unable to breathe. This is why a "sucking chest wound" is so dangerous.... it's allowing outside air to surround your lungs, instead of having your lungs fill with air.
Position of; Intercostals.. In-between the ribs, running obliquely downwards Diaphragm.. Mid chest separating the thoratic and abdominal cavities. Action; ..Keeps us breathing when working with the ribs, sternum and lungs. ..expands and retracts with breathing
The ribs enclose the thoracic cavity providing bony protection for the vital organs of the thorax-the heart and lungs.Because the thorax must expand and contract to allow breathing, the ribs move slightly in a "bucket handle" type of motion with each breath.Therefore the ribs are involved with breathing.
The stems involved in breathing: the ribs, intercostal muscles, diaphragm as well as the lungs and the tubes which bring air into the body from the outside.
The muscle that has its insertion on the xiphoid process of the sternum is the diaphragm. The diaphragm is the primary muscle involved in respiration, and its central tendon attaches to the xiphoid process, as well as to the lower ribs and lumbar vertebrae. This attachment helps facilitate the expansion and contraction of the thoracic cavity during breathing.
The larynx or voice box provides a passage. but the alveoli help
Ribs: The ribs protect the lungs and expand as you inhale to facilitate space for the lungs to expand like the diaphragm. The ribs then contract expelling the air in the lungs. The ribs enclose the thoracic cavity providing bony protection for the vital organs of the thorax's heart and lungs.
Your diaphragm lowers and your ribs expand outwards
Im not expert, but isn't it the diaphragm and rib muscles, the muscles between the ribs, internal and external intercostals.