ANATOMY AND PHYSIOLOGY { STRUCTURE AND FUNCTIONS OF THE INTEGUMENTARY SYSTEM/SKIN} THE INTEGUMENTARY SYSTEM IS MADE UP OF {SKIN,HAIR,NAILS,SEBACEOUS GLANDS,SWEAT GLANDS ETC}..THE SKIN IS THE LARGEST ORGAN ON THE HUMAN BODY. THE SKIN IS MADE UP OF THREE {3} LAYERS,WHICH ARE {EPIDERMIS/SUPERFICIAL LAYER,DERMIS AND SUBCUTANEOUS LAYER. THE EPIDERMIS IS COMPOSED OF EPITHELIAL CELLS AND STRATIFIED EPITHELIUM ALSO THE EPIDERMIS HAS TWO {2} MAIN LAYERS WHICH ARE THE STRATUM CORNEUM KNOWN AS YOUR HORNY LAYER AND THE OTHER BEING THE GERMINATIVE LAYER. THE STRATUM CORNEUM BEING THE SUPERFICIAL LAYER OF THE EPIDERMIS IS MADE OF THIRTY {30} LAYERS OF DEAD CELLS AND THE GERMINATIVE LAYER BEING DEEPER WITHIN HERE NEW CELLS ARE BEING FORMED AND THEN PUSHED UPWARDS TO REPLACE DEAD CELLS. THE DERMIS BEING THE SECOND LAYER OF THE SKIN IS MADE UP OF WHITE FIBROUS TISSUE AND ELASTIC,ELASTICITY IS ESSENTIAL TO ALLOW CHANGES IN THE SIZE OF THE SKIN. ALSO IN THE DERMIS THERE ARE OTHER PARTS THAT HELPS TO MAKE UP THE SYSTEM OF THE SKIN THESE ARE :NETWORK OF BLOOD VESSELS - IN WHICH THE BLOOD TRANSPORTS OXYGEN TO THE DERMIS AND REMOVE CARBON DIOXIDE, NERVE ENDINGS - HERE THE DERMIS HAS A RICH SUPPLY OF NERVE, SEBACEOUS GLANDS - THESE ARE SMALL GLANDS THAT SECRETES SEBUM WHICH IS AN OILY SUBSTANCE THEN THERES THE SWEAT GLANDS WHICH IS DISTRIBUTED THROUGHOUT THE SKIN THROUGH ECCRINE AND APOCRINE AND ALSO THERES THE HAIR FOLLICLE AND HAIR - IN WHICH HAIRS GROWS FROM FOLLICLE WHICH ARE CAVITIES DEEP IN THE SKIN. HAIR CONSISTS OF EPITHELIUM AND FOLLICLE KNOWN AS SHAFT. THE LAST LAYER OF THE HUMAN SKIN THE SUBCUTANEOUS LAYER WHICH IS COMPOSED OF ADIPOSE AND AREOLAR TISSUE WHICH IS SIMPLY FAT FUNCTIONS OF THE SKIN PROTECTION - SKIN BEING FIRST LINE OF DEFENSE AGAINST HARMFUL AGENTS SUCH AS CHEMICAL REGULATION - OF BODY TEMPERATURE HOT AND COLD EXCRETION - OF WASTE PRODUCT SALT,UREA ETC SECRETION - OF SWEAT SECRETION - OF SEBUM SENSATION - TO TOUCH FORMULATION - OF VITAMIN DACQUIRED THROUGH SUNLIGHT ABSORPTION FACTORS THAT AFFECT SKIN INTEGRITY AGE DISEASES DIABETES TRAUMA FALL IMMOBILITY/INACTIVITY OBESITY
Posted on: Fri, 05 Sep 2014 21:28:26 +0000
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