And it turns red when it reaches the air?
2006-10-08 05:01:52 · 19 answers · asked by SWM 38 _4_ YOUNG GF 5 in Health ➔ Other - Health
Truthfully, blood is purplish red in our veins, brighter red in the arteries. Why? The component in our blood which gives it the red color is hemoglobin, which becomes more reddish when exposed to oxygen and less reddish when the oxygen has been removed from it. I've donated more than 9 gallons of whole blood in my life, which is taken from the vein. Believe me, venous blood is indeed closer to purple than red.
2006-10-08 05:11:26 · answer #1 · answered by spongeworthy_us 6 · 0⤊ 0⤋
It is not purple. It becomes a deep, dark red when it is on the way back to the heart because the oxgen has been distributed throughout the body. Once it pumps back thru the heart i picks up more oxygen and then become a bright red. For instance if you received a minor cut on a capillary or on a vein, the blood would be a very dark red and flowing. If you rec'vd a cut on an artery...which has just left the heart..blood would be bright red and splurting. Sorry, didn't want to sound too graphic.
2006-10-08 05:16:45 · answer #2 · answered by bugged 2 · 0⤊ 0⤋
Blood is red but can vary from bright red to dark red. I think that venous blood looks a lot like bing cherry juice. It is true that oxegenated blood is redder and deoxygenated is darker - almost purple, but the color can also be dependent on whether the person is anemic or not. An anemic person's blood has less red blood cells and can appear lighter red than someone with a healthy hemoglobin level. I''ve drawn lots of blood and can tell as soon as the specimen starts entering the tube if someone has severe anemia by the appearance in the tube.
Also - rarely is venous blood completely deoxygenated.
2006-10-08 05:31:08 · answer #3 · answered by petlover 5 · 1⤊ 0⤋
Yes, it's red, dark red (deoxygenated blood)
In humans and other haemoglobin-using creatures, oxygenated blood is bright red. This is due to oxygenated iron in the red blood cells. Deoxygenated blood is a darker shade of red, which can be seen during blood donation and when venous blood samples are taken. However, due to an optical effect caused by the way in which light penetrates through the skin, veins typically appear blue in color. This has led to a common misconception that venous blood is blue before it is exposed to air. Another reason for this misconception is that medical charts always show venous blood as blue in order to distinguish it from arterial blood which is depicted as red on the same chart.
2006-10-08 05:10:46 · answer #4 · answered by Gary H 3 · 3⤊ 0⤋
It is never blue as such. Oxygenated blood is bright red. Blood bound to carbon monoxide is even brighter red. Unoxygenated blood is dark red, maroon really. The depth of the vein in the skin often imparts a bluish color to it, or to the lips when unoxygenated blood is present (as in cyanosis). There are also nevi (moles) that appear blue, even though they aren't due to the particular depth in the skin that they reside.
But NEVER could blood in a body be described as blue. I have done literally thousands of autopsies, and the blood within them is not oxygenated, and it is always some shade of red.
2006-10-08 05:17:05 · answer #5 · answered by finaldx 7 · 1⤊ 0⤋
I agree with jessman, I know because I had to get like 50 needles in a day and was always seeing nurses, eventually I asked, they said that in the veins the blood is a off blue/purple color but when it get mixes with oxygen it turns red. So my source is a actual working nurse and a doctor.
2006-10-08 05:11:45 · answer #6 · answered by ♥ღαмαиdα♥ღ 7 · 0⤊ 1⤋
If you gash open your arm, the blood flows, and is red. But it is red because the oxygen in the air reacts with it. The normal color of blood, is bluish, like dark blue. While it looks "purple" in your veins, it not actually purple. Next time you go to a doctor, ask him or her. They will verify this is true.
2006-10-08 05:12:53 · answer #7 · answered by Fury 2 · 0⤊ 2⤋
Try learning how to get subject verb agreement in your questions.
Who are some?
Blood cells are blue. They turn red when Oxygen attaches to iron molecules called hemoglobin on the surface of the cell; that's why blood is red when it's outside of the body. However, veins look green or blue because the blood has given up all the oxygen to the cells and is returning to the heart/lungs to get re-oxygenated.
2006-10-08 05:10:02 · answer #8 · answered by joe 3 · 1⤊ 2⤋
Oxygenated blood is RED.
2006-10-08 05:11:32 · answer #9 · answered by gg 7 · 0⤊ 0⤋
Blood is red. I seems pale blue (or purple) through your veins, but the actual substance is red.
2006-10-08 05:03:39 · answer #10 · answered by tyrian&eustas(the puffin) 2 · 2⤊ 1⤋