Red Blood Cells and Blood/Air Veins.
Hemoglobin is red while oxyhemoglobin is redder. People think that blood in veins is blue but it has lost the oxygen it was carrying around to the cells so it is a red color but not as red as oxyhemoglobin.
Red blood cells contain hemoglobin, an iron-containing molecule that binds oxygen. As with rust, the iron compounds turn brighter red when the hemoglobin absorbs oxygen.The blood in your veins are blue. Red blood is red because the color of oxyhemoglobin is red because there is iron in oxyhemoglobin, causing that blood red color.Red blood cells are red because the iron in the heme group of the four hemoglobin proteins react with oxygen (think what color rust is) to produce a red color.
The protein hemoglobin, which carries oxygen in the blood and appears brighter red in the vessels that carry oxygen. In the veins, the hemoglobin has already given up most of its oxygen to the body. Therefore the blood turns a darker red.
Blood is always red (NEVER blue) because of hemoglobin, the main factor in blood's color. Deoxygenated hemoglobin is dark red, while oxygen enriched hemoglobin is more cherry red. The common misconception that deoxygenated blood in your veins is blue stems from textbooks that show arteries in red and veins in blue for simplicity. Also, your veins appear blue through your skin because of a variety of reasons only weakly dependent on the color of the blood. Light scattering in the skin, and the visual processing of color play roles as well. If arteries were near the skin surface, they would appear blue as well. Cameras inserted in veins during medical procedures clearly show that blood in veins is red, and when drawing blood from veins in a way that doesn't expose it to the air, it is clearly a dark red color and not blue.
oxygen. without it, the red blood cell will turn a dark red.
Hemoglobin is red while oxyhemoglobin is redder. People think that blood in veins is blue but it has lost the oxygen it was carrying around to the cells so it is a red color but not as red as oxyhemoglobin.
Red blood cells contain hemoglobin, which is a pigment that contains iron and helps transport oxygen--and gives blood its red color.
redThe hemoglobin turns bright red when it picks up oxygen. However, hemoglobin will also absorb carbon monoxide gas, which is why it is so dangerous.
The bright red color of blood is due to the binding of oxygen to the hemoglobin of red blood cells. Veins appear to be a darkish blue hue because they are deoxygenated.
No, white blood cells do not contain hemoglobin; red blood cells contain hemoglobin (and it is the hemoglobin that gives them their red color).
The AV300 emits an infrared light that detects hemoglobin (a red blood cell that carries oxygen throughout the body). Hemoglobin concentration is much higher in the veins than in the rest of the tissue so the higher concentrations of it show up as a shadow. The oxygen reacts with the light, which is why you see where your veins are.