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.
Human blood is red, ranging from bright red when oxygenated to dark red when not. It owes its color to hemoglobin, to which oxygen binds. Deoxygenated blood is darker due to the difference in color between deoxyhemoglobin and oxyhemoglobin. There exists a popular misconception that deoxygenated blood is blue and that blood only becomes red when it comes into contact with oxygen. Blood is never blue, but veins appear blue because light is diffused by skin.