2007-03-13 21:20:43 · 12 answers · asked by bathkhush 1 in Science & Mathematics ➔ Medicine
All these people are right, what is interesting, when in the hospital, we will do some tests on venous blood which somehow retains the integrity of it's condition in situ. (Don't exactly know the mechanics of "how/why") Anyways, it is the creepiest blue-purple color...looks like alien blood. It's just crazy.
2007-03-13 21:30:18 · answer #1 · answered by ♥austingirl♥ 6 · 1⤊ 1⤋
Whole blood is red due to its main component: red blood cells. Blood comig out from a vein is not fully saturated by atmospheric oxygen because it needs special structures like of lungs and cells, pressure and concentration conditions as well as gas diffusion rules for oxygen to hit blood and CO2 to be replaced the oxyen. However the color diffrence between oxygenated and deoxygenated blood cant be made by naked eye or without a lab test.
2007-03-13 22:49:28 · answer #2 · answered by ZCPian 1 · 0⤊ 0⤋
Venous blood is not blue, it is dark red. It looks blue when you are looking at a vein under the skin, but that is not the blood's true color.
Arterial blood is bright red.
2007-03-14 15:28:00 · answer #3 · answered by Jeye 3 · 0⤊ 0⤋
Blood cells contain haemoglobin - natures very own tissue paper. Haemoglobin is great at absorbing oxygen, just like tissue paper is great at absorbing liquids.
Now when you combine oxygen and haemoglobin you get oxyhaemoglobin, which gives blood its red colour.
Now to answer your question, if you cut a vein the blood will pour out and haemoglobin will quickly combine with the oxygen in the air and turn red.
enjoy
2007-03-13 22:11:04 · answer #4 · answered by mrbragg2k 3 · 0⤊ 0⤋
Blood is red in the presence of oxygen because of the hemoglobin protein, which gets its colour from iron. Iron in the heme is only in the Ferric Oxide (Fe2) form.
Oxyhemoglobin is formed during respiration when oxygen binds to the heme component of the protein hemoglobin in red blood cells
Deoxyhemoglobin is the form of hemoglobin without the bound oxygen. The absorption spectra of oxyhemoglobin and deoxyhemoglobin differ. The oxyhemoglobine has significantly lower absorption of the 660 nm wavelength than deoxyhemoglobin, while at 940 nm its absorption is slightly higher.
The difference gives the perception of different colours.
2007-03-13 21:29:34 · answer #5 · answered by Anonymous · 1⤊ 0⤋
Venous blood is actually more of a purple color, and that is due to lack of oxygen. When the oxygen hits the blood it turns to its normal red color.
2007-03-13 21:35:00 · answer #6 · answered by Warren D 7 · 0⤊ 0⤋
As far as I am aware, the blue is used diagramatically to show deoxygenatd blood. All blood is read, but the blood in a vein is a dark red (deoxygenated) and that from an artery is bright red (oxygenated). Hope it helps
2007-03-13 21:24:59 · answer #7 · answered by maidmaz 3 · 4⤊ 1⤋
Blood turns red after oxygen comes into contact with it.
2007-03-13 21:28:49 · answer #8 · answered by WolfsLW 1 · 1⤊ 0⤋
All blood turns red when its exposed to air (Oxygen).
2007-03-13 21:23:18 · answer #9 · answered by smoothie 5 · 2⤊ 0⤋
I think its the eosin in blood that oxidizes readily and turns blood red when exposed to the atmosphere.
2007-03-13 21:24:53 · answer #10 · answered by omnisource 6 · 0⤊ 2⤋