Question

Which is "redder" ? Oygenated or De Oygenated blood ?

Answer 1

damn, typo:: that's Oxygenated

Answer 2

both... is it like dat red=redder=reddest.. not sure

Answer 3

its kinda obvious, oxygenated is bright red. De-oxygenated blood is dark/dull red. Why?

Answer 4

oh dis is the question...wait i m answering

Answer 5

Well, Oxyginated blood is blood rich within oxygen. Where do we get Oxyginated blood? In Blood vessel leaving the Lungs and Pulmonary capillary and Artereies except pulmonary aretery.It is bright-red in colour and saturated with O2
Deoxyginated blood is blood in need oxygen. It is Dark red and are found in Vessels taking blood to lungs,Pulmonary artery and adjectives veins except pulmonary artery. and has a higher CO2 level.
A nice pic for ya;
http://cccmkc.edu.hk/~kei-kph/Daily%20science/oxygenated_blood_page%201.htm

The reason for this as i understand it is the Iron. Rust is red in colour, blood has iron to bind to oxygen which oxidizes the iron giving the bright red colour, When we have deoxygenated blood there is less oxygen, less oxidation and we see the colour change

Answer 6

yup i agree with abv statement , and as we have studied the colour of blood is red due to presence of iron but my question is den oxygenated blood should be more red than deoxygenated but it is vice versa

Answer 7

It isn't about "rust".. but you're close!

Answer 8

Rust was a simplified example.
Oxyhemoglobin is formed during physiological respiration when oxygen binds to the heme component of the protein hemoglobin in red blood cells. This process occurs in the pulmonary capillaries adjacent to the alveoli of the lungs. The oxygen then travels through the blood stream to be dropped off at cells where it is utilized in glycolysis and in the production of ATP by the process of oxidative phosphorylation. It does not, however, help to counteract a decrease in blood pH. Ventilation, or breathing, may reverse this condition by removal of carbon dioxide, thus causing a shift up in pH.[29]
Hemoglobin exists in two forms, a taut form (T) and a relaxed form (R). Various factors such as low pH, high CO2 at the level of the tissues favor the taut form, which has low oxygen affinity and releases oxygen in the tissues. The opposite of these factors at the level of the lung capillaries favors the relaxed form which can better bind oxygen. This is done at a molecular level be moving the Fe(iron) group either in or out of the haemaglobin molecule.

Deoxygenated hemoglobin is the form of hemoglobin without the bound oxygen. The absorption spectra of oxyhemoglobin and deoxyhemoglobin differ. The oxyhemoglobin has significantly lower absorption of the 660 nm wavelength than deoxyhemoglobin, while at 940 nm its absorption is slightly higher. This difference is used for measurement of the amount of oxygen in patient's blood by an instrument called pulse oximeter. This difference also accounts for the presentation of cyanosis, the blue to purplish color that tissues develop during hypoxia.
Physics tells us that they differ in colour due to light absorbed in the spectrum because of differing physiological changes like oxygen and carbon dioxide in the hemoglobin and how the Fe reacts to it

Answer 9

To the naked eye, they look the same. The reason your veins look blue is not because the deoxygenated blood is purple/blue, however it is because of the colour of the tissue that makes up the vein walls and also because of the way that the light passes through our skin allowing us to view the veins. Deoxygenated blood is not blue, but BiomedStudent is probably right in that there is a little bit different absorption spectra for deoxyhemoglobin versus oxyhemoglobin.

Answer 10

Yea, its one way we test the levels in the labs