Although snakes are covered with scales, part of their integument consists of skin.
             When the snake's body is distended , after a large meal , for instance, this interstitial skin can be easily
             seen and indeed , it is the areas of skin between the scales that gives the snake's body its flexibility. Other
             than this important function, snakes interstitial skin is unremarkable , except in a few cases where it is
             coloured differently from the scanles and is used in displays to intimidate predators .
             Reptile scales are formed from thickened area of the epidermis.
             All snakes are covered in scales, but their shapes, textures and arrangements vary greatly.
             The scales form a good degree of physical protection from general wear and tear when the snake moves
             Elasticity is also important when swallowing.
             Ceratin scales are used in locomotion, when their edges are hooked over irr
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