Breathing.
air is moving in and out of the lungs
The main muscle of respiration (moving air into and out of the lungs) is the diaphragm.
Diaphragm
Yes
Air enters the lungs because the pressure in the atmosphere is greater than the pressure in the lungs. Lung pressure is lowered by increasing the volume of the lungs. This is achieved by lowering the diaphragm and raising the rib cage.
The term for moving muscles in order to make air flow into and out of the lungs is breathing. The main muscle that moves is the diaphragm, which sits just below the lungs and causes air to flow in and out as it contracts and expands.
Your lungs would do that.
The water cycle occur between the earth and the air. It is a cyclic process.
false
the diaphragm tightens (moves down) expanding the lungs. This expansion creates the pressure in the lungs to decrease. Since nature always strives for equilibrium, high pressure moves to low pressure areas --> air fills the lungs. the diaphragm relaxes, moving back up in the chest cavity, increasing the pressure on the contents in the lungs. The air escapes the lungs to reach the lower pressure area outside our body.
Actually the ribs are moving outward and expanding as the lungs fill with air. The expansion of the ribs makes room for more air to enter the lungs.
Inspiration, as called inhalation, moves air into the lungs. Expiration, as called exhalation, moves air out of the lungs.