Question

How does our blood clot ?

Answer 1

When we have a cut the blood flows out of the wound. This blood contains, in addition to red blood cells and white blood cells, tiny structures called platelets. These platelets pile up around the wound. Then combine with other substances in the blood plasma (liquid) and chemicals in the damaged tissue to form long sticky threads called fibrin. Fibrin threads crisscross each other and form a kind of dam to trap the blood. This dam is a solid plug or clot. A clot that forms over a wound on the surface of your skin is called a scab. The clot after formation prevents further flow of blood.