AP BIOLOGY

Detailed explanation-1: -One of the main functions of the skin is protection. It protects the body from external factors such as bacteria, chemicals, and temperature. The skin contains secretions that can kill bacteria and the pigment melanin provides a chemical pigment defense against ultraviolet light that can damage skin cells.

Detailed explanation-2: -The epidermis acts like armor to protect your body from harm, including ultraviolet (UV) radiation, pathogens (bacteria, viruses, fungi and parasites) and chemicals. Skin color. The epidermis has cells called melanocytes which make melanin, which is a group of pigments in your skin that provides skin color.

Detailed explanation-3: -The top layer is the epidermis. It protects the other layers from the outside environment. It contains cells that make keratin, which waterproofs and strengthens the skin. The epidermis also has cells with melanin, the dark pigment that gives skin its color.

Detailed explanation-4: -The four protective functions of the skin. Prevent heat(dessication), prevents bacterial invasion, protects against thermal damage, and protects against UV radiation.

Detailed explanation-5: -Your integumentary system is your body’s outer layer. It’s made up of your skin, nails, hair and the glands and nerves on your skin. Your integumentary system acts as a physical barrier-protecting your body from bacteria, infection, injury and sunlight.