Matching Pairs Integumentary BasicsOnline version Match up the terms! by Kim Sandberg 1 Melanin 2 How many layers of the skin are there? 3 Subcutaneous Layer 4 Dermis 5 Sweat 6 Epidermis 7 Protection, Temperature Regulation, Hydration Regulation, Sensory Perception, Synthesis of Vitamin D Functions of the Skin Top layer of the skin Connective layer of skin not visible to the naked eye. 2 Below the epidermis and dermis layers of skin, composed of connective tissue and adipose fat Secreting this via pores lowers your body's overall temperature The pigment producing portion of your skin.