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In: Biology
To expand on what others have said regarding scar tissue. It is important to note that although injuries can heal properly and essentially the original tissue fixes itself, there is another option which is that scar tissue can form which is basically the bodies emergency mechanism kicking in, scar tissue does the job so much as covering the body and not allow bleeding for example. However it isn’t exactly like whatever it is replacing, which is why scars don’t look like normal skin and don’t have hair. Scars tend to be less flexible/stretchy than skin, and that isn’t just on the surface but also below.
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