rebel meaning, definition, what is rebel: a person who is opposed to the political system in their country and tries to change itâ¦. Learn more.
The difference between oxygenated and deoxygenated blood is that oxygenated has just been filled with oxygen from the lungs. Deoxygenated blood travels from the body back to the lungs to have oxygen resupplied.
This is due to oxygenated iron in the red blood cells. Deoxygenated blood is a darker shade of red, which can be seen during blood donation and when venous blood samples are taken. However, due to an optical effect caused by the way in which light penetrates through the skin, veins typically appear blue in colour.