The bright red blood is oxygenated fresh blood. As the lining of the uterus becomes older (the underlying layers) the blood along with tissue and other cells/fluids contains less oxygen so they become darker and may appear brown.
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Menstrual blood can vary in color and consistency due to factors such as the flow rate and the length of time it has been exposed to oxygen. Lighter-colored menstrual blood typically indicates that the blood is newer and flowing at a slower rate, allowing less time for oxidation and clotting to occur.
Yes, spiders do have blood, but it is not always visible when you kill them because their blood is clear or light-colored.
Yes, it is normal for period blood to clot during menstruation. Clotting can occur when the blood flow is heavy and the blood is expelled quickly, causing it to clot before it exits the body.
A blood clot is a clump of blood that forms in a blood vessel, while shedding of the uterine lining during menstruation is the natural process of the uterus releasing its lining.
Blood comes out through the vagina during menstruation.
Blood flows out of the uterus through the cervix and then out of the body through the vagina during menstruation.