In what ways are cleavage lines in the skin clinically significant?
a. stretching of the skin during pregnancy or extreme weight gain will cause stretch marks along these lines.
b. they are surgically important because any procedure resulting in a cut perpendicular to a cleavage line may gape and delay healing.
c. tattoos are not able to be produced across these lines.
d. breakdown of collagen fibers along these lines improves skin flexibility.