@xKingFrenchy, technically half true, it's only red when the hemoglobin is saturated with oxygen such as in arteries. It is more blue/black when saturated with carbon dioxide, such as in veins.
@fettman1138, not true. Blood is always red. Its much darker in the body but its never blue/black
@Aaron Leibowitz, if you say so man, I work in the medical field as a respiratory therapist and know the difference between arterial and venous blood. Huge difference in color.
@fettman1138, and further then that its mostly just from the conformation of the pyrole groups on the heme. The more you know! But this likely means nothing to most. By the way you are correct about the coloring as it shifts due to increased/decreased aromaticity.
@IAmFlame, even further there can be two different cause that shift the aromacity. Deoxyhemoglobin is the normal black/red blood found in veins after aerobic gas exchange at the cellular level where the Paco2 is roughly 35-45mmgh. Carboxyhemoglobin is typically found in chronic Co2 retainers, where the normal Paco2 is 55-65 mmhg, Pa02 is chronically low at about 50-55mmhg (know in my world as the 50/50 club). Thus normal arterial blood is black red and venous blood is blue/black.
@xKingFrenchy, "b" for communism?
@fettman1138, Then how come blood is red when it's being drawn from a vein into a vacuum sealed container?
@northern frownpour, if it's normal venous blood then it will still have oxygen, but higher levels of co2. So it would still be a base shade of red, but always very dark compared to arterial blood . However it would be literally a bright red if drawn from an artery such as with an ABG or if someone was being super oxygenated.
With a COPD patient it would be closer to blue/black or purplish due to the even higher levels of co2 and lower levels of oxygen.
If you want to compare colors then go draw some arterial blood from someone and you'll know the difference. Most people only see venous blood that is drawn from them at a lab or hospital.
@northern frownpour, " Arterial blood is the oxygenated blood in the circulatory system found in the lungs, the left chambers of the heart, and in the arteries. It is bright red in color, while venous blood is dark red in color (but looks purple through the translucent skin). It is the contralateral term to venous blood."
@fettman1138, blood is never close to blue. Idk who taught you that.
@Dr Kriegerstein, I don't tell you guys how to flip burgers at McDonald's. Don't tell me my business Drawing ABGs.
When a COPD patient codes due to respiratory failure and their arterial PH is at 6.8 because their paco2 is close to 100mmhg and their pao2 is 30mmhg, the blood is blue/black or DARK purple.
@fettman1138, I've seen black, not once have I seen blue. I once even drew up what looked like water once. That was an odd experience.
@Dr Kriegerstein, we'll then you haven't drawn a chronic hypoxic, chronic Co2 retainers blood during a code or possible a sever ketone acidosis due to a diabetic not controlling their sugars.
@fettman1138, not during that yet, as far as I've seen. The darkest I've seen is black. It was dark almost like no other color to it at all.
@fettman1138, I don't know where you get the notion that unoxygenated blood is blue in colour so please enlighten me with your expertise.
@fettman1138, veins don't always carry deoxygenated (co2-rich) blood. Veins from the lungs, called pulmonary veins, carry oxygenated blood from the lungs to the left atrium of the heart. And your own post about blood looking blue under the skin proves yourself incorrect. It merely looks blue, but is not actually blue. It's actually the iron in blood (attached in the hemoglobin protein) that gives all blood, oxygenated or not, its distinct hue. Diagrams portray deoxygenated blood as blue. It's a common misconception because of that
@fettman1138, yeah but that's not the answer to the question... the answer is B.
Well, where there is communism, there is blood soooooooo...
🎶Союз нерушимый республик свободных
Сплотила навеки Великая Русь.
Да здравствует созданный волей народов
Единый, могучий Советский Союз!
Well, "e" isn't totally inaccurate. Communism does result in a lot of blood.
*waits for correct answer*
@Fun Haus, e. Damn commie blood
@Not him again, not you again
@Fun Haus, I believe the correct answer is hemoglobin, but I'm not too good with geography
@CaptainCrunchyCvnt, i was thinking fibrin but im not good with late 70s game shows
@CaptainCrunchyCvnt, geography? I thought this was statistics
Red Revolution anyone?
I didn't realise it was a question at first
My blood bleeds red with the suffering of the proletariat! DOWN WITH THE BOURGEOIS! LONG LIVE THE DIALECTIC! VIVA LE REVOLUTION!
I mean... everyone has some...