Relacionar Columnas Integumentary System ConceptsVersión en línea Integumentary System Concepts por Jorge Arizpe 1 What is melanin? 2 Associated structures are: 3 The three main layers of integumentary system: 4 Four major functions 5 Types of Sudoriferous glands 6 Others activities of the skin 7 Mention how to care for the skin: Sebaceous oil glands, Sudoriferous glands, Hair and Nails The pigment that gives human skin, hair, and eyes their color. Dark-skinned people have more melanin in their skin than light-skinned people have. Melanin is produced by cells called melanocytes. 1. Eccrine: Produce watery type of sweat Activated by heat 2. Apocrine: Produce thicker type of sweat with more proteins Concentrated in armpit and groin areas Activated by nervousness or stress 1.Protection against infection 2.Protection against dehydration (drying) 3.Regulation of body temperature 4.Collection of sensory information 1. Absorption of substances such as medications 2. Excretion (Water, Electrolytes,Wastes) 3. Manufacture of vitamin D Epidermis, Dermis and Subcutaneous layer 1. Proper nutrition 2. Adequate circulation 3. Regular cleansing Removes dirt and dead skin Sustains slightly acid environment to inhibit bacteria 4. Protection from sunlight Exposure to UV light causes genetic mutations in skin that can lead to cancer, and causes premature aging.