I recently discovered that blood is actually yellow, but do not know how/why it changes to red, I'm guessing its something to do wuth the air
2007-02-21 21:17:48 · 9 answers · asked by Anonymous in Science & Mathematics ➔ Biology
There are four main parts of blood, the Plasma, the fluid of the blood is Yellow but the red blood cells which carry the oxygen are what give the colour and will be red with and without oxygen but just different shades.
The other parts are platelets which will go to cuts to seal them up and white blood cells to fight infections both of which are smaller and generally in fewer numbers so won't compete with the red colouring
Blood only ever appears blue due to the refraction of light through the veins and skin and blood will always be red.
2007-02-21 21:21:55 · answer #1 · answered by agius1520 6 · 0⤊ 0⤋
I would just like to add that plasma is a pale yellow colour (or straw coloured, if you will). Ofcourse the red colour is attributable to the RBCs with haemoglobin while the WBCs and platelets do not contribute for any colour . Oxygenated blood is bright yellow in colour whereas blood which has carbon monoxide poisonging has a different crimson colour. Veinous blood is supposed to be just dark red in colour. Blood of older persons also tends to be darker in colour especially if they are taking lesser liquids, etc. while anaemia results in pale red blood reflected in the testing in the lab. Diseases like jaundice and such do not show immediately to the naked eye and will have to be tested with a photocolorimeter for their bilirubin/bilicrystin content.
2007-02-22 08:07:45 · answer #2 · answered by straightener 4 · 0⤊ 0⤋
ummm no. blood is not yellow and it is most definitely not blue. blood is a dark red color. i believe you are thinking that one of the components of the blood is yellow which is the plasma i believe. the blood only changes color due to changes in pH which would occur in differences in the amount of oxygen molecules are bound to the hemoglobin, which is found in blood. with more oxygen it is a deep dark red but with less oxygen bound (remember hemoglobin can hold 4 O2) it becomes a lighter red. The reason blood vessels appear green is due to the index of refraction of the skin.
2007-02-22 05:32:59 · answer #3 · answered by Anonymous · 0⤊ 0⤋
Normal blood itself is not yellow, and if it is, see a doctor ASAP. There is certainly one of the ingredients of blood that is yellow, but not the liquid that pores out normally.
Blood is dark red in its pure form.
There is a myth that blood is blue in the body due to lack of Oxygen, but this is an optical illusion due to the reilly effect of light diffraction on your skin. In other words, because of the way the light travels in your skin, it looks blue.
2007-02-22 06:46:15 · answer #4 · answered by Anonymous · 0⤊ 0⤋
Blood is red coloured due to the presence of respiratory pigment calle haemoglobin in the RBCs. However, it is dark red in color when deprived of O2 and laden with CO2. When it gets oxygenated it changes into bright red or scarlet colour,becoz of oxyhaemoglobin. So, oxygen accounts for the change of colour in blood.
2007-02-22 05:33:10 · answer #5 · answered by Janu 4 · 0⤊ 0⤋
Yellow? Never heard that. Just always believed its blue till it hits oxygen.
2007-02-22 05:26:06 · answer #6 · answered by babyshambles 5 · 0⤊ 0⤋
blood is not yellow.
blood is very dark inside the body when it has no oxygen. oxygen is what gives blood the bright red color.
2007-02-22 15:32:50 · answer #7 · answered by Jennisonfire 3 · 0⤊ 0⤋
blood which contans haemoglobin recieves oxygen and changes to oxy-haemoglobin, this causes the change in blood colour to red.
2007-02-22 08:50:10 · answer #8 · answered by iyalladestiny 1 · 0⤊ 0⤋
its not suppose to be yellow its supposed to b blue and it turns red wen it mixes with oxygen.
2007-02-22 05:22:04 · answer #9 · answered by green.toes 1 · 0⤊ 0⤋