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Quick Facts. Level: 26. Requires level 22. Type: Dungeon. Side: Alliance. Start: Nikova Raskol. End: Nikova Raskol. Sharable. Difficulty: 22 24 29 34. Added in patch 1.13.2. Screenshots. None yet – Submit one! Videos. None yet – Suggest one! Links. The Color of Blood. Nikova Raskol of Stormwind wants you to collect 10 Red Wool Bandanas. 10.
The Colour of Blood, published in 1987, is a political thriller by Northern Irish-Canadian novelist Brian Moore about Stephen Bem, a Cardinal in an unnamed East European country who is in conflict with the Roman Catholic Church hierarchy and finds himself caught in the middle of an escalating revolution.
- Brian Moore
- 1987
- Overview
- 1. What color is blood?
- 2. Do some animals have blue blood?
- 3. How much blood is in the body?
- 4. How much blood can a person safely lose?
- 5. What are blood types?
- 6. What are blood transfusions?
- 7. How important is blood donation?
- Takeaway
All blood in the human body is red in color. It is untrue that deoxygenated blood is blue.
In this article, we look at a variety of facts about blood, including color, types, and donation.
Human blood contains hemoglobin, which is a complex protein molecule in red blood cells.
Hemoglobin contains iron. The iron reacts with oxygen, giving blood its red color.
Although veins appear blue through the skin, blood is not blue. The reason why veins might seem to be blue may have to do with the level of oxygen in the blood.
Arteries transport blood that is rich in oxygen away from the heart to be used by organs and tissues in the body. The veins return deoxygenated blood to the heart.
It is a common myth that veins are blue because they carry deoxygenated blood. Blood in the human body is red regardless of how oxygen-rich it is, but the shade of red may vary.
The level or amount of oxygen in the blood determines the hue of red. As blood leaves the heart and is oxygen-rich, it is bright red.
Similar to people, most animals also have red blood. However, there are a few exceptions.
Some types of octopus, squid, and crustaceans have blue blood. Their blood contains a high concentration of copper. When copper mixes with oxygen, it gives their blood its blue color.
Blue and red are not the only possible colors of blood — some animals bleed green.
The skink, which is a type of lizard, has green blood due to a buildup of biliverdin. Biliverdin and bilirubin are by-products of the liver. Humans also produce these two by-products.
Everyone knows that blood is a vital component of the human body. But just how much blood is in the body? The exact amount of blood in the body varies according to a person’s size. The larger a person is, the more blood volume they have.
Approximately 7–8 percent of a person’s total weight is blood. That means an average-sized woman has about 9 pints of blood and an average-sized man about 12 pints.
If a person loses too much blood, it can lead to a life-threatening condition called hemorrhagic shock.
Research shows that shock usually occurs when a person loses 20 percent of their blood volume.
Everyone’s blood contains the same elements or components. Human blood contains red cells, white cells, platelets, and plasma. Even though all blood contains those same components, not everyone’s blood is alike.
There are different blood types based on the absence or presence of specific antigens and antibodies on the surface of the red blood cells. An antigen is a substance that can cause an immune system response in the body.
The two most common antigens are A and B. For example, people with the blood type A have an A-antigen on their red blood cells, and people with type B blood have a B-antigen. Some people have both.
People with O blood type do not have either A or B antigens on the red blood cells. Type O is the most common blood type in the world.
Another antigen is a protein called the Rhesus (Rh) factor. People with this protein are considered Rh-positive. If the blood lacks the protein, they are Rh-negative.
It is more common to have Rh-positive blood than Rh-negative. If a person who is Rh-negative needs a transfusion, they should not receive Rh-positive blood.
Blood transfusions are when healthy blood from a donor is injected into a person who needs it.
Common reasons to have a blood transfusion include:
•Severe blood loss from surgery, an accident, or childbirth.
•Anemia, when a person does not have enough red blood cells.
•Some types of cancer and cancer treatment, including chemotherapy.
•Conditions that affect the red blood cells, such as sickle cell disease.
Without a blood transfusion, significant blood loss or severe anemia can be life-threatening.
Donating blood can save lives. For those who are unsure about donating blood, it is helpful to consider the facts below:
•Around 5 million people in the United States receive blood each year.
•The Red Cross estimates that someone needs blood about every 2 seconds.
•Although research is underway to make synthetic blood, currently blood for transfusions only comes from donors.
•Typically, a person will donate just 1 pint of blood at a time.
Blood is essential for the functioning of the human body, but many myths about the body persist. Having accurate information about blood or any other aspect of health is vital.
If someone is in doubt about a health issue, it is essential to talk to a doctor to get the most accurate information.
The color blood with hexadecimal color code #8a0303 is a medium dark shade of red. In the RGB color model #8a0303 is composed of 54.12% red, 1.18% green and 1.18% blue. In the HSL color space #8a0303 has a hue of 0° (degrees), 96% saturation and 28% lightness. This color has an approximate wavelength of 611.37 nm. Color Variations. Inverted.
27 lug 1999 · The Color of Blood. 27 Jul 1999. By Science News Staff. Share: The scientist who discovered the chemical structure of hemin, the iron-laden compound in red blood cells that gives blood its color, was born on this day in 1881. Hans Fischer studied medicine and chemistry simultaneously, but decided to be an organic chemist rather than a doctor.
The Reason for Blood Color. Human blood is a beautiful red color, but the blood of some animals—and of humans under certain conditions—is a different color. The function of all blood is to transport vital substances around the body. Animals sometimes transport substances in a different way from humans, however.
4 mag 2022 · What color is blood? There’s no need to build up the suspense: Blood is red. It might vary from a bright cherry red to a dark brick red, but it’s always red. “If you get a cut ,” says Dr. Lichtin, “red is the only color you’re going to see come out.” The reason? It has to do with the hemoglobin molecules within your red blood cells.
