Yes
do you mean fills with air? if so then its the lungs
The lungs are like a balloon because they expand and contract as we breathe, similar to how air fills and exits a balloon.
The deer most likely use their mouth or nose. They then expand their chest or lungs to withdraw the air from the atmosphere. The air then travels though the mouth or nose into the lungs.
The lungs has a negative pressure. When air enters that space, it fills in the lung cavity making the lungs unable to expand and collapse.
The diaphragm contracts, causing the lungs to expand. This creates a 'pressure difference' and air fills the lungs. When the diaphragm relaxes, it 'squeezes'[ the lungs, forcing the unabsorbed air (and waste gasses) back out again.
Lungs are not muscles. They are made up of connective, epithelial, and nervous tissues. The diaphragm is the muscle that contracts and relaxes to expand and relax the chest cavity. Your lungs just fill with air -- which is why they appear to be moving (much like a when a balloon fills with air).
There are no muscles in the lungs that help inhale or exhale, this is the job of the diaphragm.
Lungs expand to fill with air. It is done during respiration.
its is the lungs come to us and get your answer
what happens when you inhale is that air goes into your lungs and your lungs get bigger ...Actually, your diaphragm moves to expand the volume of your thoracic cavity, which pulls a partial vacuum on your lungs, causing them to expand FIRST...and THEN the partial vacuum created by your expanded lungs causes air to move into them. When you breath out, it causes the reverse to occur.
When the air pressure in the lungs is higher than in the atmosphere, air will flow out of the lungs to equalize the pressure. This is called exhalation. It allows the body to get rid of carbon dioxide and regulate oxygen levels.
When you breathe in, your diaphragm will contract, causing your lungs to expand and suck in air. When you breathe out, your diaphragm will relax, causing your lungs to shrink and force out air.