When the diaphragm contracts the lungs are pulled down. This creates space in the lungs for air to rush in because air pressure is greater outside the body than inside the body. So in order to reach an equilibrium the air outside rushes into the lungs when you inhale.
To my little knowledge of the body,the lungs collapse on exhaling and expand on inhaling.As the brain controls everything,except the heart, the heart has cells which can think for itself.If the brain stopped functioning,the heart can still beat as long as it has oxygen in the lungs.As soon as the air is used up the heart will eventually stop.When you sleep your heart keeps the lungs inhaling and exhaling to maintain life until you awake.Then the brain goes into a rest period and just gives the heart and lungs a slight electric shock to keep them going. If Im wrong here please let me know.
Inhaled air is warmed and moistened in the nasopharynx and oropharynx.
Inhaled air is typically warmed and humidified as it passes through the nasal passages. The purpose of this process is to protect the delicate tissues of the respiratory system from damage due to cold and dry air.
Exhaled air, which has a slightly higher amount of carbon dioxide, is heavier than inhaled air.
Exhaled air has less oxygen than inhaled air.Exhaled air has more carbon dioxide than inhaled air.Exhaled air is warmer that inhaled air.Maybe the first 2 are redundant, but I think that should work!
You die.
Exhaled air contains 16% oxygen and 21% when inhaled.
Breathing.
Air inhaled through the mouth is not as clean as air inhaled through the nose. Reason for this is that when we inhale air through our nose than it get filtered by hair present in our nose. But air inhaled through our mouth goes directly in without any filtration.
air, which is a mix of several gasses
About 21%
About 21%.
Yes