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.
The idea that oxygenated blood is red and deoxygenated blood is blue is a common misconception. In fact, human blood is never blue. It does change color depending on the level of oxygenation. In the arteries, where blood is fully oxygenated, it appears bright red, while in the veins, where the oxygen is depleted, it is a dark red. Blood derives its red color from hemoglobin, a reddish iron-containing protein that is found in red blood cells.