When the diaphragm and muscles of the rib cage relax, the thoracic cavity becomes smaller. These changes occur during exhalation.
The space in your chest cavity increases.
During exhalation the diaphragm relaxes and the chest cavity gets smaller.
answer: diaphragm at the bottom of the chest cavity is a muscle called the diaphragm. when the diapragm contracts, the chest cavity becomes larger.
The diaphragm (a sheet of muscle underneath the ribcage) and intercostal muscles (located between your ribs).
answer: diaphragm at the bottom of the chest cavity is a muscle called the diaphragm. when the diapragm contracts, the chest cavity becomes larger.
When you inhale, the diaphragm muscle contracts and moves downward, and the rib cage expands as the intercostal muscles between the ribs contract. This creates more space in the chest cavity, allowing the lungs to expand and fill with air.
Increases
Inhalation
the diaphragm, ribs, chest muscles, and sternum.
the diaphragm and intercostal muscles increase in strength allowing for greater expansion of the chest cavity
Inhalation is caused by the diaphragm and external intercostal muscles contracting, which increases the volume of the chest cavity. Exhalation is primarily a passive process, where the diaphragm and external intercostal muscles relax, allowing the chest cavity to decrease in volume and air to be expelled from the lungs.
The diaphragm separates the chest from the abdomen and pelvis