During menstruation, it is not just blood the exits the body, it consists of other tissue (epithelium) that lines the uterus.
Blood is always red (common misconception is that it is blue). But when blood binds to oxygen it gets slightly darker red. It is always red because of the porphyrin in the heme group. The heme group in hemoglobin (the protein responsible for transporting gases in the red blood cells) consists of a porphyrin and an Iron ion. Another misconception is that the Iron causes the blood to be red, but it is the organic molecule Porphyrin that does this.
Like what colors? All i know is red and blue. Blue is the blood color in skin and it turns red when blood comes out.
When blood is in the body, it appears as a dark bluish red due to the iron in our blood (if human blood was actually blue we would have copper instead of iron) and the lack of oxygen, but when blood is exposed to air, the hemoglobin absorbs even more oxygen, causing it to turn red, and after it dries, a dark rusty red colour.
Capillaries change color as they pass by body cells as the blood they contain loses oxygen. Oxygen-rich blood has a brighter color than oxygen-poor blood.
If you are referring to why blood goes from bright red in the aorta to a darker reddish-purple in the pulmonary artery, the answer is because the blood has lost the majority of the oxygen it was carrying. This causes a conformation change in the carrier hemoglobin, which results in a color change. If you are referring to another color change in the blood (such as why a particular animal's blood is chocolate brown, for example), this would be due to a toxicosis and the animal should be taken to a vet immediately.
oxygen
Blood changes color at the lungs because it unloads carbon dioxide and absorbs oxygen. Red blood cells that are carrying oxygen are a brighter red color than red blood cells that are depleted of oxygen.
Most vaginas with infections show no change in color. Trichomoniasis or candida can cause red vaginal skin.
vampires eyes change color when they are either a newborn or when they had drank a humans blood
You skin changes color when it's cold because blood can't flow as easily.
because when bit blood rushes tho the area causing swelling. and with all of the blood there the skin then turns color on the account of the extra pressure added from the blood
No it stays blue, it only turns blue in the presence of blood
After the hem-occult card is prepared, and the reagent is dropped on to the specimen, if blood is present there will be a color change resembling that of the positive control. The color change isn't necessarily limited to the perimeter of the drop.
the gas used to process the meat or the oxygen has expired from the blood cells
It is caused by a bunch of broken blood vesseles, causing the color of a bruise to change.