This action decreases pressure and increases the space in the thoracic cavity, allowing your lungs to expand as you inhale. When the diaphragm relaxes, your chest cavity becomes smaller and your ...

Your diaphragm is a thin muscle that separates your chest and abdomen. When you inhale, your diaphragm tightens and expands your chest cavity. A paralyzed diaphragm doesn’t tighten as it should when ...

When a person inhales, their diaphragm contracts and flattens and the chest cavity enlarges. This contraction creates a vacuum, which pulls air into the lungs. When a person exhales, the diaphragm ...

The diaphragm is a sheet of skeletal muscle that separates your heart and lungs (the thoracic cavity) from the rest of your internal organs and controls airflow in and out of the lungs.

Breathe in. In that one simple motion, your diaphragm tightened up and moved down. This made your chest cavity bigger. Your intercostal muscles between your ribs tightened up, too. This made your ...

To breathe in, the diaphragm contracts and becomes flattened. This increases the size of the thoracic cavity to decrease pressure inside the lungs. This decrease in pressure draws air into the ...

Two primary mechanisms drive breathing mechanics, influencing the volume and pressure within the chest cavity, where our lungs reside. These include movement of the diaphragm, the dome-shaped ...

During inspiration (or inhaling), your lungs expand, and the diaphragm pushes down to decrease pressure in the chest cavity and make room for your lungs to expand with air. During expiration (or ...