You are rolling along on your bike when suddenly you hit a stone on the road. You fall and cut your hand. It is bleeding and it hurts.
Right away, your body begins healing the cut. Your cells quickly jump into action and do their special jobs.
When you cut yourself, you begin to bleed. Almost at once the blood begins to clot. The cells stick together. Slowly, the blood gets thick and covers the cut. Then the blood dries and gets hard. It makes a kind of cover, called a scab, over the cut.
The cells along the edges of the cut grow and divide. New cells take the place of some of those that were hurt by the cut.
Still other cells to another kind of job. These are special healing cells. They make a kind of net that joins the edges of the cut together. Each day this net gets thicker, tougher, and stronger.
Soon the scab falls off. Then you can see the new skin underneath. Your body has healed itself.
Sometimes a deep cut leaves a mark on your skin, even after it has healed. That mark is called a scar. A scar forms when a deep layer of skin has been damaged. Scars may be red at first but the colour usually fades over time.
Picture Credit : Google
