What is the difference between integumentary system and exoskeleton? Hair, feather, scales and horns are examples of exoskeleton or integumentary system? Human nails are examples of exoskeleton or integumentary system? Human skeletal system is entirely an endoskeleton or it also has some exoskeletal features?
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Explanation:
Skin is the layer of usually soft, flexible outer tissue covering the body of a vertebrate animal, with three main functions: protection, regulation, and sensation
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