when you breathe in the intercostal muscles and the diaphragm contract lifting the ribs up.
The Phrenic Nerve-Diaphragm and the External Intercostal Nerve-External intercostal muscles
The intercostal muscles. Intercostal means "between ribs".
The diaphragm and external intercostal muscles are primarily involved in changing the thoracic volume during breathing. The diaphragm contracts during inhalation to increase thoracic volume, while the external intercostal muscles help lift and expand the rib cage.
the intercostal muscles and the diaphragm
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.
The diaphragm (a sheet of muscle underneath the ribcage) and intercostal muscles (located between your ribs).
During a period of relaxed and average respiration, the muscles associated with inspiration, or the process of inhaling, include the muscles of the diaphragm, the external intercostal muscles, and the interchondral region of the internal intercostal muscles.
Diaphragm and intercostal muscles.
Children primarily use their diaphragm and intercostal muscles to breathe. The diaphragm contracts and moves downward, expanding the chest cavity, while the intercostal muscles between the ribs help to further expand the chest for breathing in.
Intercostal muscles increase in strength due to being repeatedly used in exercise, so to strengthen them you will have to do endurance training. The stronger the intercostal muscles the more air you can inhale as they pull your rib cage out giving you a larger thoracic cavity.
an exhalation
The diaphragm and the external intercostal muscles.