2. What is the function of epidermis layer? 3. What are the two functions of dermal layer? 4. What are the three functions of subcutaneous layer?

Answer

Solution for Question 2: The primary function of the epidermis (the outermost layer of the skin) is protection. It acts as a waterproof barrier that protects the body from external threats such as bacteria, viruses, and environmental chemicals. It also prevents the loss of water (dehydration) from the body and produces melanin, which protects the skin from UV radiation. Solution for Question 3: The dermal layer (dermis) serves several critical purposes, but two major functions are structural support and thermoregulation. The dermis contains collagen and elastin, which provide the skin with strength and flexibility. It also regulates body temperature through blood vessels that can dilate or constrict and sweat glands that release moisture to cool the body. Solution for Question 4: The subcutaneous layer (also known as the hypodermis) has three main functions: insulation, energy storage, and shock absorption. It consists mostly of adipose (fat) tissue, which helps keep the body warm by insulating it, stores energy for future use by the body, and acts as a mechanical cushion to protect underlying muscles and bones from trauma.