The integumentary system consists of the skin, hair, scales, sweat and oil glands integrated with specialized nerve receptors for any external or internal stimuli like touch, cold, heat, pain, etc. Its primary function is to prevent disease causing microorganisms into its internal structures, regulate body temperature and perspiration, protection against harmful UV rays, and the production of the all important vitamin D.
The integumentary system covers the body skin including hair and nails as well as other functionally important structures supporting this organ. The skin provides containment, structure, and protection for other organs, but it also serves as a major sensory interface with the outside world. Disorders with this system would deal with dermatology, cell physiology and skin physiology.
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