Q. How is the protective covering ‘scab’ formed over the healing wounds?
Ans. When a skin gets cut, what happens in the first place is the rushing of platelets present in the blood along with other blood content. When the blood is exposed to air, the platelets come into action by combining with the proteins called fibrin and forming a mesh kind of structure on top of the wound. This mesh kind of structure is called the ‘Scab’. Thus the bleeding stops due to the platelets, which acts a natural way of healing wounds.