Hemoglobin, when united with oxygen, turns bright red.
your blood is blue but as the blood reaches the surface of your skin it is red. hope this helps. Ayraayra: Your skin will turn a bluish-purplish color.
Red blood cells need oxygen. Oxygen is what gives blood that bright red color. When blood is lacking oxygen, it turns dark and that's why people turn purple or blue.
Dark blood is blood from which the oxygen has been depleted. Once it is filled with oxygen again (in the lungs), it becomes lighter in color.
Bluish/purplish if a person is dead. Living people with low oxygen levels will look pale.
Blood only appears blue when viewed through the skin because of the way light interacts with it. Oxygen-rich blood is bright red and oxygen-poor blood is a darker red color. The blue hue seen under the skin is due to light absorption and scattering, not the actual color of the blood.
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
redThe hemoglobin turns bright red when it picks up oxygen. However, hemoglobin will also absorb carbon monoxide gas, which is why it is so dangerous.
Blood is a dull red in the body once the oxygen from the air hits it when you get a cut etc it makes it turn a brighter colour as it has been oxygenated
Due to the lack of oxygen in the blood, the face turns black instead of its healthy red color when the blood is flowing
The oxygen poor blood (not enough oxygen) goes to the lungs to get more oxygen to turn into oxygen rich blood (has plenty of oxygen)
Lack of oxygen causes blood cells to appear blue. Remember that all veins except the pulmonary vein carry 'oxygen depleted blood' or deoxygenated blood. Dont worry that your veins appear blue though! Its fine.
The lungs could be gray or have black spots.