The term for a low amount of oxygen in blood is called cyanosis. It refers to the bluish color of some body tissues, like the lips, because cyan is the name of a shade of the color blue.
Or it can be called anemia if it is due to the low number of healthy red blood cells that carry oxygen.
In anemia, you have low level of hemoglobin and so low level of oxygen in the blood.
To the contrary, oxrgen cycels through your lungs and enters your blood. you use oxygen every second and you need a constant supply of it. As you lack oxygen your body starts to shutdown what isn't needed to keep you alive until your oxygen or blood oxygen is out.
Venous blood is loaded with carbon dioxide and low in oxygen Arterial blood is rich in oxygen with little carbon dioxide
Iron is required by the hemoglobin in red blood cells. Hemoglobin carries oxygen to all areas of the body. A lack of dietary iron could decrease the oxygen-carrying capacity of red blood cells, which can lead to anemia.
The red blood cells themselves do not take any action to get more oxygen, but the kidneys sense a lack of oxygen and produce more erythropoietin (hormone responsible for producing red blood cells) and this in turn increases oxygen levels
The red blood cells. This is because it will increase surface area for the absorption of oxygen.
Carbon monoxide takes oxygen from the atmosphere or inside a persons body to form CO2 and the person will die from lack of oxygen
The term is hypoxemia lack of oxygen in the blood means that the hemoglobin oxygen complex is not being formed properly the oxygen hemoglobin complex is HbO4 if less than four oxygen molecules combine with one hemoglobin then it is called oxygen deficiency in the blood It can also be caused by a lack of red blood cells-anemia
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To the contrary, oxrgen cycels through your lungs and enters your blood. you use oxygen every second and you need a constant supply of it. As you lack oxygen your body starts to shutdown what isn't needed to keep you alive until your oxygen or blood oxygen is out.
CYANOSIS Is a bluish discoloration of the skin and mucous membranes caused by a lack of adequate oxygen in the blood.
Lack of heamoglobin, lack of iron etc
Venous blood is loaded with carbon dioxide and low in oxygen Arterial blood is rich in oxygen with little carbon dioxide
Loss or reduction of normal oxygen levels in the blood.
One cause would be lack of oxygen due to suffocation or lack of blood flow carrying the oxygen to the brain.
Can be caused from there being a lack of Oxygen in the blood, but there can be other causes... if you have black blood see a doctor