You have over billion air sacs in your lungs. Together they form about 100 square meter or 1100 square feet surface area. Through these large number of alveoli, you have transfer of oxygen and carbon bi oxide. When you have the air sacs damaged, that is compensated by increase in rate and depth of respiration. When the damage is more than, what can be compensated, you get respiratory failure. In this you get the oxygen, less than what is required by your body. This can be seen as central cyanosis.
Damaged alveoli can reduce the surface area available for gas exchange, including oxygen uptake. This can lead to decreased oxygen diffusion into the bloodstream, resulting in lower oxygen levels in the blood.
Conditions like anemia, chronic lung diseases, and carbon monoxide poisoning can reduce the amount of oxygen that blood can carry. In these situations, the binding of oxygen to hemoglobin in red blood cells is affected, leading to decreased oxygen-carrying capacity in the blood.
carbon monoxide.
Yes, anemia refers to a low number of erythrocytes in the blood, and therefore less oxygen can be transported at a given time.
Anemia can reduce the amount of oxygen-carrying hemoglobin in the blood, which can lead to less oxygen being able to bind to red blood cells. This can result in reduced oxygen delivery to tissues and organs, potentially causing symptoms like fatigue, weakness, and shortness of breath.
It binds with them the same way oxygen should, but it won't let go. That means that oxygen is no longer capable of binding with the blood cells. That means that although one breathes oxygen, one does not get the oxygen through the body.
Smokers have lower concentrations of oxygen in their blood because smoking can damage the lungs and reduce their ability to take in oxygen from the air. This can lead to a decrease in the amount of oxygen that gets into the bloodstream, resulting in lower oxygen levels overall.
carbon monoxide.
When your heart vessels are damaged they prevent the amount of blood being pumped around the body to be sent to the muscles etc. during active sports Your body needs blood(oxygen) during active sport and if you cannot receive it due to a damaged heart valve you will lack vital oxygen for your muscles during sport
People with emphysema often have damaged alveoli, which reduces their lung capacity and ability to exchange oxygen efficiently. As a result, they may experience low blood oxygen levels (hypoxemia). Breathing pure oxygen helps to increase the amount of oxygen available in the bloodstream, alleviating symptoms and improving overall oxygenation, which is crucial for their body's functions. This supplemental oxygen can enhance their quality of life and reduce the strain on their respiratory system.
oxygen
The inhaled smoke takes up space in the lungs which should filled with air. This in turn reduces the amount of oxygen in the blood stream because of space now filled by poisonous gases taken from the smoke.