Blood collects oxygen from the lungs through the process of respiration. Oxygen is inhaled into the lungs and diffuses across the thin walls of the alveoli into the bloodstream, where it binds to hemoglobin in red blood cells for transport to the body's tissues and cells.
It collects oxygen
the lung collects oygenation blood
Capillaries in your lungs provide oxygen to the haemoglobin molecules of red blood cells.
Red blood cells
the lungs
various reasons. the blood is responsible for delivering oxygen to the cells. as a result anything blocks the blood from reaching the cells will limit the oxygen. or some intoxication such as CO toxicity which replace the place of oxygen in the blood.
Hemoglobin is what transports the oxygen in the red blood cells.
The hemoglobin protein in red blood cells is responsible for picking up oxygen in the lungs and transporting it to cells throughout the body. Hemoglobin binds to oxygen in the lungs and releases it to cells where it is needed for cellular respiration.
If by that you mean where they get their own oxygen, then from nowhere because red blood cells do not need oxygen, they perform all reactions anaerobically.If you mean where they get it to give off for the rest of your body, then its from the lungs.
No - not really anyhow. Oxygen is brought to the lungs by breathing in air. The lungs function as an exchange system which loads up the red blood cells with oxygen. So lungs give oxygen to red blood cells which then deliver the oxygen to all the parts of the body.
Red blood cells obtain oxygen from the lungs where they pick up oxygen from inhaled air during the process of respiration. This oxygen is then carried by red blood cells to tissues throughout the body to support cellular functions.