2006-10-01 18:29:37 · 15 answers · asked by Anonymous in Science & Mathematics ➔ Medicine
Yes to the first question, and "it depends" to the second question.
Blood in the veins is depleted blood returning to the lungs for a refill. So if you cut a vein, the blood is blue. In space it'll stay blue, but here on earth it'll still be very dark.
Arterial Blood has recently been oxygenated, and is on it's way to the rest of your body. It's red. In space or anywhere else.
2006-10-01 18:35:24 · answer #1 · answered by Jerry 3 · 0⤊ 2⤋
I believe you've been misled by the drawings in biology books where veins and unoxygenated blood are represented in blue while arteries and oxygenated blood are represented in red - this is even carried through in dissection labs where the animals veins are injected with a blue rubber compound and the arteries are injected with red.
Human blood is made up of a liquid part and a solid part. The liquid part, when it is still in the body, is called plasma. It is yellowish in color. It makes up about 50 - 60 % of our blood.
The solid part is made up of cells; red blood cells, white blood cells
and platelets.
White blood cells and platelets have no color but appear white when they are grouped together, as when blood is separated in a centrifuge. Together they make up less than 1 % of the blood. They are pictured in text books as having a variety of colors. This is because they can be stained with various dyes after they are removed from the body then placed on a glass slide.
Red blood cells are always red. Since red blood cells make up about 40-45% of our blood, the blood is red. Red blood cells are red because they have a protein called hemoglobin which contains iron. Iron likes to bind oxygen. Oxygen combined with iron is red. The more oxygen iron has bound to it, the redder it is.
Veins appear blue because light, penetrating the skin, is absorbed and reflected back to the eye. Since only the higher energy wavelengths can do this (lower energy wavelengths just don't have the *oomph*), only higher energy wavelengths are seen. And higher energy wavelengths are what we call "blue."
2006-10-01 18:44:46 · answer #2 · answered by Zim 3 · 3⤊ 0⤋
Is Deoxygenated Blood Blue
2016-10-19 06:09:02 · answer #3 · answered by thorsten 4 · 0⤊ 0⤋
Blood whether it is oxygenated or unoxygenated it will be in red color only if the blood has HAEMOGLOBIN.So blood depends upon Haemoglobin but not whether it is oxygenated or unoxygenated.
There is no need of Cutting our body in Space...if we stand naked in space (WITHOUT SPACE SUIT )then the blood automaticalyy is spilled out of body and the person will be dead.This is due to no Gravity.The blood will be red in color in space too.
2006-10-01 18:42:23 · answer #4 · answered by Anonymous · 2⤊ 0⤋
No it is not blue, It is darker Red, that is a falecy about blood being Blue. Medical Science has proved that when someone is being operated on such as Open heart Sugery. they have done that so show he circulation of blood flood on an Antomical Chart, blood is always Red. Fresh oxygenated blood is bright red, No if you were cut in space your blood is still red
2006-10-01 18:39:23 · answer #5 · answered by back2skewl 5 · 0⤊ 0⤋
As far as I'm aware the red colouring in blood is more closely related to the haemoglobin (iron) content. I think lack of haemoglobin can lead to a lack of oxygen but not the other way around. Therefore I would presume that blood containing no oxygen would just be a different shade of red no matter where it occurred.
2006-10-01 18:45:36 · answer #6 · answered by jimmy the fink 2 · 0⤊ 0⤋
Colour of blood comes from the pigment hemoglobin. It is red. Deoxygenated blood is slightly leser in red shade. Suppose I cut you to pieces u bleed red. Suppose I send u into a gas chamber the cyanide makes the blood blue and black
2006-10-01 18:55:08 · answer #7 · answered by J.SWAMY I ఇ జ స్వామి 7 · 0⤊ 0⤋
Yes and likely yes. It depends on where the wound is coming from. Veins lie near the surface and carry unoxygenated blood. So most cuts should bleed blue in space
2006-10-01 18:31:58 · answer #8 · answered by Mr Pink 2 · 0⤊ 4⤋
Didn't you ask this last week. Blood is not blue. Blood is shades of red; brighter red for oxygenated blood and darker red for unoxygenated blood.
2006-10-01 18:34:34 · answer #9 · answered by OU812 5 · 2⤊ 1⤋
once the blood has delivered the oxegen that it is carring it the appears to change color. the blood itself stays red. it is the oxigen that is blue. that is why arteries are blue. they are taking the oxegine away from the lungs and veins apear to be red they are taking the blood to the lungs. think of when someone gives blood, it pumps into the tube that is air tight as red. as far as in outer space I don't think that you have to worry about that one, Juddy Jetson.
2006-10-02 02:32:02 · answer #10 · answered by Speedy 3 · 0⤊ 1⤋