Body+Covering

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=We is here to let you all kno about the body covering of all vertebrates. = =Fish Verterbrates = =The body covering for fish is some times no fins or scales.Some fish = =have smooth bodies such as = =1. Jawless fish - they have no fins ,plates or scales they have eel like bodies that are smooth. = =2. Cartilaginous fish - they have tough skin called cartilage that is flexabile that can bend in any direction. = ==3. Bony fish- they have many strong bones that is covered with fleshy fins.the bones help to extend and ampify the fishes motion that help move it through the water.The way their skin is arranged it help them move through the water. ==

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Amphibians
==Amphibians have moist skin and permeable to gases,water,allowing rapid diffusion of oxygen.Carbon dioxide and water.Numerous mucous galnds supply a lubricant that keeps the skin moist in air.The mucous is what makes them feel slimy the skin also contains glads.The secret foul tasting or poisonous substances that provide protection from preadators.They aso mostly live in wet or moist areas on land.Many species are active at night when loss of water through evaporation is redeuced. ==

Reptiles
==Reptilies scaly covering develops a surface cell filled with keratin.The same protieins that forms fingernails and hair.The skin helps make the skin watertight.The tough skin of a reptile not only helps conserve body water but also protects the animal against infection and injuries. ==


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