Not all but most. there is no system, manmade or natural, that is 100% efficent.
The respiratory system seems like the obvious answer, but you used the word absorb. The respiratory system takes air into the lungs, but the red blood cells (erythrocytes) absorb the oxygen out of the air taken into the lungs. The circulatory system then delivers these red blood cells to the capillaries where the oxygen is traded for carbon dioxide as the cells need.
The lungs remove oxygen from the air.
From the air drawn into the lungs by movement of the diaphragm
Your body absorbs some of the oxygen out of air in your lungs
From the air around it. During the day, plants absorb oxygen from the air. At night - they absorb carbon dioxide.
your lungs
The respiratory system seems like the obvious answer, but you used the word absorb. The respiratory system takes air into the lungs, but the red blood cells (erythrocytes) absorb the oxygen out of the air taken into the lungs. The circulatory system then delivers these red blood cells to the capillaries where the oxygen is traded for carbon dioxide as the cells need.
they absorb oxygen directly from the air without lungs.
Alligators are air breathers. They inhale and exhale through their nostrils. Their lungs absorb oxygen from the air that they inhale.
We exhale more oxygen than we use. Air contains approximately 20% Oxygen - when we breathe in - we absorb about 4% of the oxygen - and exhale the rest.
The respiratory system seems like the obvious answer, but you used the word absorb. The respiratory system takes air into the lungs, but the red blood cells (erythrocytes) absorb the oxygen out of the air taken into the lungs. The circulatory system then delivers these red blood cells to the capillaries where the oxygen is traded for carbon dioxide as the cells need.
The most important organ of our respiratory system is the Lungs. The lungs are the organs that extract or absorb oxygen from the air we breathe and fills our blood with life giving oxygen.
you give your lungs less time to absorb the oxygen in the air because you breath it out immediately.
You inhale them but your lungs only absorb the oxygen- they are exhaled again when you breathe out.
Amphibians use their lungs for respiration, but they also absorb oxygen through their skin. They breath underwater by absorbing dissolved oxygen in the air or gills.
Raccoons breath in oxygen just like any other mammal. They inhale oxygenated air through the mouth and nose into the lungs. The lungs absorb the oxygen and excrete carbon dioxide.
The respiratory system seems like the obvious answer, but you used the word absorb. The respiratory system takes air into the lungs, but the red blood cells (erythrocytes) absorb the oxygen out of the air taken into the lungs. The circulatory system then delivers these red blood cells to the capillaries where the oxygen is traded for carbon dioxide as the cells need.