Relier Pairs 2.32 Concepts of the Integumentary System (D)Version en ligne Concepts of the Integumentary System par Emir Barajas 1 Other skin functions 2 They produce melanin 3 What is melanin? 4 Four main functions of the skin. 5 Actions for skin care and protection 6 Generates hair 7 Structures associated to the skin 8 Three main layers of the skin. Hair follicle 1. Proper nutrition 2. Sport (helps circulation) 3. Regular cleaning 4. Sunlight protection (UV rays). 1. Substances absorbtion (Ex: some medicines) 2. Excretion (water, electrolytes, toxines) 3. Vitamin D synthesis 1.Protection against infections 2.Protection against dehydration 3. Body temperature regulation 4. Capture sensations Cells called melanocytes Sebaceus glands, sweat glands, hair and nails. 1. Epidermis 2. Dermis 3. Hipodermis o subcutane layer Pigment that gives color to the skin, hair and eyes. People with darker skin produce a larger amount of melanin.