The little sacks found in you LUNGS are called ecoli and they fill up with air every time you breath in.
alveoli
Your question is unclear. Are you asking what does the most in the respiratory system , then tiny little sacs called the alveoli do.
The insect respiratory system operates by passive exchange of gasses through tiny holes called spiracles in their abdomen.
Cilia are the tiny hairs that sweep dust and dirt out of the respiratory system.
They are called spiracles, tiny tubes alongside the insect's body which allow it to receive air. Kind of like gills, but for insects. Good luck!
These are called cilia.
Cilia are tiny hair-like projections from the apical cells of the respiratory system. They beat in an upward direction to push mucous and any trapped substances out of the lungs.
ok, think of your lungs as a cluster of grapes hanging upside down. The smallest branches are called bronchioles . At the end of each bronchiole is an "air sac" called alveoli .
Its called an Abobafart. It ic called this because tiny elves that move the diaphragm are called Abobs. When they fart its so smelly that a small explosion occurs in the diaphragm, causing it to move fast. This causes shortness of breath and enflames some broncials in your lung. If the Abobs fart too much, you get athsma.
As you breathe through your nose, it will go through the windpipe and into your lungs. It will go through tiny holes in the lungs. The wastes will get out from the tiny holes into your windpipe and you breathe them out.
They are called alvioli (al-vee-oh-li)
Its venules