What are red and white blood cells?

Answer 1

They are called red blood cells for a reason. They are generally red. If the amount of oxygen in the blood drops below a certain point, it can look purple, and through the skin the veins may appear to be blue.

Only in molluscs and some arthropods is oxygenated blood blue, due to the presence of the protein hemocyanin, which contains copper rather than the iron found in hemoglobin.

Answer 2

Human blood is definitely not blue. This is a common misconception that comes from looking at the 'blue' veins in the skin and anatomy charts. The color in blood comes from hemoglobin, a protein that carries oxygen. When there is lots of oxygen in the blood, the hemoglobin turns a little brighter red. When blood is in your veins (that are mostly red too), and is de-oxygenated and carrying wastes from the body tissues, it is a very, very dark red. It only seems blue when you look through your skin because the skin and blood reflect light differently and make the veins and venous blood seem blue looking through light colored skin. If you were to look inside someone, their veins and arteries and the blood inside them would look very similar, not blue at all. Blue is only a reflective property of the skin and underlying veins. Arteries would look just the same if they were close enough to the surface to see like veins.

Answer 3

That is false. There are only two types of blood cells. They are white blood cells (lymphocytes) and red blood cells (erythrocytes). There is no such thing as blue blood.

Answer

The two types of blood cells are red and white. Red blood turns dark red when it is deoxygenated (lacks oxygen), though not blue. Oxygen, which we use for cellular respiration, is what makes blood turn bright red. White blood cells are involved in the immune system.

Answer 4

They are improtant for youre body

Answer 5

parts of the blood