Normally, human blood is bright red. But is it possible that it's color changes if it doesn't meet oxygen?
2006-09-18 11:52:35 · 12 answers · asked by Oscar S 2 in Health ➔ Other - Health
Venous blood (blood that has travelled to your muscles and peripheral tissues and delivered most of its oxygen to the tissues) has a bluish cast. You can see this if you're thin enough and your veins show through your skin.
Blood fresh from the lungs where hemoglobin binds oxygen is bright red, and then becomes darker (bluish) once more when it gives its oxygen to the tissues.
Someone whose tissues are not receiving enough oxygen may appear cyanotic (cyan=blue). This is due to not enough blood reaching an area of the body, and the local tissues essentially suck all the oxygen from the blood, giving it a blue cast.
2006-09-18 11:54:31 · answer #1 · answered by Dustin 2 · 0⤊ 0⤋
Whole blood is not blue.It is either bright red ,with oxygen, moving away from the lungs.or dark red ,without oxygen as in the veins, moving back towards the lungs. How ever, one scenario is that a person who takes a large hit or multiple hits of nitrous is getting little to no oxygen, which is reflected in the bluing of the blood flowing through the lips.Such bluing is called cyanosis.Mild cynosis is difficult to detect and is more obvious in the mucous membranes and nail beds. There needs to be more than 5 grams of deoxygenated haemoglobin in a persons bloodstream to see cyanosis. Usually the oxygen saturation of the blood has to drop below90% before this occurs.
2016-03-27 08:07:17 · answer #2 · answered by ? 4 · 0⤊ 0⤋
Blood is actually bluish in color with decreased oxygen levels. This is why veins are blue and arteries are red. Blood appears red when you are cut because the hemoglobin in the blood is exposed to atmospheric oxygen.
2006-09-18 11:57:21 · answer #3 · answered by Agaricales 2 · 0⤊ 0⤋
yea human blood is blue in the bady but because of the oxygen when it leaves the body it turns a bright red then darkens as more comes out
2006-09-18 11:55:59 · answer #4 · answered by Leah k 2 · 0⤊ 0⤋
go to http://www.madsci.org
bottom line is that human blood is red,inside and outside the human body. Yes it can become darker,or lighter depending on oxygen levels.
2006-09-18 12:13:24 · answer #5 · answered by zoya 6 · 0⤊ 0⤋
Without oxygen , blood becomes darker.
2006-09-18 12:01:53 · answer #6 · answered by Aushbaba 3 · 0⤊ 0⤋
yes, Blood is purple or deep red when it hits oxygen its bright red !
2006-09-18 11:53:53 · answer #7 · answered by Anonymous · 1⤊ 0⤋
yeah, oxygen makes it bright red
2006-09-18 12:01:27 · answer #8 · answered by batman13 2 · 0⤊ 0⤋
Without O2/hemoglobin, your blood would turn blue.
2006-09-18 11:55:51 · answer #9 · answered by AlexS 2 · 0⤊ 0⤋
yes it would be blue w/o oxygen
2006-09-18 11:54:03 · answer #10 · answered by tangerine321 1 · 0⤊ 0⤋