The diaphragm (a sheet of muscle underneath the ribcage) and intercostal muscles (located between your ribs).
What muscle expand the chest cavity by rotating the ribs upward, contributing to inspiration
The Diaphragm
The diaphragm is the prime mover of inspiration, as it contracts and flattens during inhalation, creating a vacuum in the chest cavity that allows air to be drawn into the lungs.
The dome-shaped muscle under the thoracic cavity is the diaphragm. Its function is to contract to increase the volume of the thoracic cavity, thereby decreasing pressure in the lungs and causing inspiration.
diaphragm
diaphragm
The diaphragm.
The diaphragm is the deepest muscle of the chest. It is a dome-shaped muscle that separates the thoracic cavity from the abdominal cavity and plays a crucial role in breathing by helping to expand and contract the lungs.
Smooth muscle.
Diaphragm
Diaphragm
The muscle that separates the abdomen pelvic cavity and the pleural cavity is the diaphragm.