No, oxygen is not an organ at all. It's a gas. However, it is inhaled and exhaled through the respiratory system.
Respiratory system
Respiratory System
Respiratory system
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.
To gain oxygen and to lose CO2.
Actually, earthworms have no respiratory system at all, they get the oxygen and nitrogen that they need from the soil.
The largest organ of the respiratory system is the lungs. This is where the exchange of oxygen and carbon dioxide occurs during breathing.
the (circulatory) respiratory system (blood flow carries oxygen)
The respiratory system obtains the oxygen, the cirrculatory system carries it to different parts in the body.
To gain oxygen and to lose CO2.
Respiratory System
Mammals use lungs to collect oxygen from the air, fish use gills to collect oxygen from the water.