trachea
When air passes through your lungs it is called respiration.
Oxygen passes through the lining of the lungs and into the blood. Carbon dioxide passes from the blood out into the air in the lungs. The blood flows near the surface of the lining in structures called capillaries, which are composed of tissue thin enough to allow this O2/CO2 transfer.
Air passes through: 1. Nose or Mouth 2. Nasal cavity 3. Pharynx 4. Larynx 5. Trachea (in throat) 6. Bronchus (in chest) 7. Bronchioles (finer tubes inside lungs) into the alveoli (tiny pockets inside lungs). The o2/co2 exchange occurs in the alveoli where they interface with capillaries. Hope this helps.
The air that is inhaled passes through the throat. More specifically, it passes through the trachea on its way to the lungs.
Trachea
It passes through the lungs.
oxygen passes through the pleural cavity to blood( red blood cells)
oxygen
Assuming you mean nostrils - they are the opening that leads to the lungs. As humans - we're supposed to inhale through our nose - as the tiny hairs in the nostrils trap dust etc before it reaches the lungs.
The blood passes through tiny capillaries that lie in close proximity to the alveoli in the lungs. This is where the gas exchange takes place.
Assuming you mean nostrils - they are the opening that leads to the lungs. As humans - we're supposed to inhale through our nose - as the tiny hairs in the nostrils trap dust etc before it reaches the lungs.
the trachea is the windpipe which passes air through to pipe into the lungs