Lungs are organs that expand to fill with air during the process of breathing. They have the ability to expand and contract to draw in oxygen and expel carbon dioxide.
No. They expand because there's a diaphragm that sits below the lungs and make them expand
They expand.
Yup
There are no muscles in the lungs that help inhale or exhale, this is the job of the diaphragm.
When you inhale, the diaphragm and intercostal muscles contract and the chest cavity expands. This creates a pressure difference that allows air to be drawn into the lungs. The lungs expand and fill with oxygen, which is then absorbed into the bloodstream for transport to the rest of the body.
so your lungs can get oxygen and so you wont die
to move when the lungs expand so the lungs dont get crushed
The inter coastal muscles in between the ribs make the ribs expand. the pleural membrane is like a slippery skin that sticks to the ribs and when they expand the lungs expand aswell.
the ribs expand slightly to give the lungs room to expand also.
Surfactant
Yes