Does weather affect skin colour?
I can’t say that plain weather could change your skin color like the sun can. Bright, sunny weather sinks deep in the epidermis, thereby provoking cells that produce melanin and give us a pretty summer glow. Weather itself cannot change your skin color. It has almost everything to do with the sun — and, if you’re anything like me, temperature can also have a temporary effect on your skin.Cold weather can cause some people’s hands and feet to turn a strange, tinged blue or purple, especially around the fingernails. This is due to the blood vessels narrowing, leading to poor circulation to the extremities, and poorly oxygenated blood. The condition goes away when the person is warmed up, thus not really changing their skin color.In closing — no, weather itself won’t have an effect on your skin!
Would our skin colour change if our blood was another colour?
If your skin doesn’t have a lot of pigment, your apparent skin color is pinkish, but your tissue without blood is more of a greenish gray. This is because skin doesn’t reflect all light back at the surface, like metals do, but rather has it mostly bounce inside and exit at different angles. Blood acts like a color filter, making a lot of the exiting light red, resulting in a reddish hue. Pigment acts similarly, limiting the hue and amount of exiting light, as well as the greenish gray skin tissue itself. So the apparent skin color is a result of these multiple ‘filters’ absorbing and filtering light under the skin surface.Blushing is a good example of this. The more blood you have in an area, the redder it gets. Another is pallor, where lack of oxygen changes the color of your red blood cells, resulting in a pale, even bluish skin. There are diseases, like hypochromic anemia, which can also alter apparent skin color by altering the color of blood.As blood is a very vibrant red, it’s apparent that not a lot of it’s color gets mixed in the apparent skin color, even with pigment-free (albino) skin. So any toned down color would result in a grayish pallor, and only very vibrant colors would change the apparent skin color to a different hue.And of course, if you have a lot of pigment, the coloration from blood might not be visible at all.
Does the weather you live in affect the thickness of your blood?
Not in normal individuals. Overall your blood is kept at 37 centigrade as we are warm blooded animals that maintain a constant internal temperature. Blood temperature does vary in different parts of the circulatory system though. In the extremities it is closer to the surface and away from the body core, so its temperature can fall significantly. There is a form of secondary reynaud's disease where patients have something called a cold agglutinin antibody. This can cause clumping of the red cells inside the blood vessels of the hands and feet, causing the blood to become "lumpy" and blocking the capillaries. this is often seen in the lab, as cold blood samples in patients with "cold aggs" clump up in the same way and have to be warmed before analysis. This would clearly only happen in cold climates. Another way in which blood viscosity varies with climate is through dehydration. If you lose too much fluid due to sweating in a warm climate then the more concentrated blood that is left is thicker. Blood viscosity does not only depend on the fraction of blood that is solid (haematocrit). Plasma proteins such as antibodies can cause the plasma viscosity to vary significantly as well and can be a marker for inflammation. This should not vary with climate though. The previous respondant said that bood viscosity does not vary by temperature. This is incorrect. plasma viscosity can be strongly affected by temperature, such that the instrument I use to measure viscosity first warms all samples to 37 centigrade before analysis. Unfortunately it is fairly poor at doing this and we must play about with the air-con and open windows and doors in order keep the controls within range. Not best practice, but hey, its a useless test anyway... Even pure water's viscosity varies significantly with temperature - we use it as an internal control.
If human blood was a different color, would our flesh be colored the same?
What blood colours are known to us, and to what colour could our blood change to? These are the colours and types (by factor proportion) on EarthRed - high Hemoglobin - effected by iron levels - most vertebratesBlue - high Hemocyanin - effected by copper levels - most arthropods (excluding most insectsGreen - Chlorocruonin -hemeprotein- certain polychaetes (some segmented, some leeches, some marine worms)Violet - Haemerythrin - certain polychaetes (most sea worms, branchiopods, penis worms)Yellow - Vadium based pigment - found in sea cucumbersClear - lack of Hemoglobin and Hemocyanin - most insects.Any other coloured blood would either be varying proportions of the blood on earth, varying its properties. Humans are capable of naturally having blue blood. Such events have been told throughout history and about 7000 people in the world who’s blood is blue. This occurs with the mother eating a lot of copper filled foods during he incubation of the embryo and its development into a fetus. From what I know about this matter their flesh is still the same, just all the veins running in it, all the capillaries running through it carry blue blood giving it a bluish colour. The same would apply for the other known blood colours and thief tones/proportions.In other words: no, the flesh would change colour, because of the blood, but the flesh structure shall be the same.For those who want to know: The reason why most vertebrates (i.e humans), especially one’s which had developed a conciseness, have red blood is because blood rich in iron (or high in Haemoglobin) is the most efficient in carrying oxygen, something necessary for large brains and bodies. Although blue blood has better turning capabilities it carries about 1/2 of the oxygen red blood can and lowers from there.Please let me know if there is anything which I could explain better or you’d like to know more about please let me know.
What color is the blood inside the body?
Normally, the color is some shade of red. The particular shade depends on the amount of oxygen bound to the hemoglobin.In the veins, where oxygen levels are lower, the blood is a darker red color. You've seen this color if you've ever had blood drawn at a lab. The vacutainers they use don't have any air in them, so the blood comes out with the same color it has in your veins.Some people think that venous blood is blue, because that's the color you see when you look at the veins under the skin of a white person. However, this is a trick of light. For you to see the veins, light has to travel through your skin to your eyes. During the travel, the red wavelengths are filtered and scattered by your skin and soft tissues, leaving only the blue wavelengths to hit your eye. The result is that the veins appear blue to your eye, even though they are actually dark red.Arterial blood has a brighter red color because the hemoglobin is completely saturated with oxygen. People usually only see arterial blood if someone has suffered a major trauma that severs an artery, or they've had an arterial blood draw.There are a few pathologic conditions that can change the color of blood. Methemoglobinemia is a condition where the hemoglobin contains ferric iron instead of the usual ferrous iron, resulting in a decreased ability to bind oxygen.The condition can be genetic, as well as induced by certain toxins and drugs. Methemoglobinemia results in a chocolate brown color to the blood, and can actually turn a person's skin blue due to cyanosis. The blue Fugates are a family that lived in Kentucky, and are one of the most famous examples of the genetic form of this condition.Sulfhemoglobinemia is another rare condition that can change the color of blood. It's usually drug induced, and caused by sulfur containing drugs such as sulfonamides. In this condition, the blood can actually take on a green tint.
Can blood transfusions change the color of one’s skin?
No, there was never a case where someone had the color of his skin change due to a blood transfusion.Skin color is controlled by specialized cells known as Melanin, which is responsible for giving the skin its pigment.These cells are found in the skin, eyes, hair, and the stria vascularis of the inner ear.Which are not used during a blood transfusion.A transfusion is used to give blood to patients with blood loss, this blood usually comes from a specific donor (or uses the Universal donor -O blood type)
Do people of different races have different colored blood?
Like Gothmo says, I kinda hope you are kidding ... Anyway - No, human blood is the same colour for all people around the world. Just think about it for a moment. Blood gets its colour mainly from the "red blood cells" or erythrocytes. Plasma is a pale straw coloured fluid, and white blood cells are actually a bit yellowish when seen clumped together, like in puss. Erythrocytes get their distinctive colour from the protein haemoglobin which they contain - normally a purplish brown, but they absorb oxygen rapidly and turn bright red: just like fresh rust on iron, because heamoglobin contains large amounts of iron. All human blood has the same basic composition and biochemistry. The only observed variations in human blood around the world is in blood groups (A/B/O) and the Rhesus factor. These are slight variations in the structure some of the proteins. They don't affect the colour - you can't distinguish Type A blood from Type B blood, or Rhesus positive from negative, just by looking at it; even under a microscope. I have seen plenty of blood and bleeding people in Australia, South East Asia and even a few in the US. They all had the same red-coloured blood. Blood types around the workld were studied by anthropologists in teh 1920s and 30s, following the pioneering work of Ludwik and Hanka Herschfeld during WW I. They found that different population groups had different proportions of the A/B/O blood types, and thought this might provide a deeper clue into human "race" then the simplistic model of skin colour and skull shape. It turned out there are indeed interesting patterns of "biochemical races" around the world, who differ in various ways - but which do not match up with the 19th century idea of "white, black and yellow" races. There is an interesting isopleth around the world based on the consistency of ear wax ... but we don't tend to start forming racial categories around ear wax because it isn't very visible (unlike skin colour). The rise of genetic categorisation has revealed that race, to the extent it exists at all, is far more complex and varied than any of our everyday "race" categories. In short - blood is red, all round the world. Hope it helps.
Does high insulin make your skin color change?
I used to be lighter and now since my doctor told me that I have high insulin and my face and my body is getting darker.... But I'm working out and eating healthy so my insulin can get normal....
Why does skin color and perspiration level increase while exercising? How do they contribute to homeostasis?
As a result of exercising, your muscle cells in action start to respire more quickly than they normally do. One waste product of cellular respiration is heat, and since exercising increases the rate of respiration, more heat is being produced; thus, your blood temperature increases. One mechanism of homeostasis is thermoregulation, which consists of vasoconstriction (when you're too cold), and vasodilation (when you're too hot). When your blood temperature becomes too high, vasodilation causes the secretion of sweat which releases excess heat out into the environment and also onto your skin which will then evaporate to cool you down. This is why your perspiration levels increase during exercise. As for the skin colour, well you appear red when exercising because, as stated earlier, your blood temperature is rising. Vasodilation causes the blood vessels to enlarge in size so that excess heat can be released out. Because of this dilation, the blood vessels appear more closer to the surface of your skin, and therefore you look red.