32.3 The Integumentary System – We learned that the structures of the integumentary system. The structures include hair, nails, and several types of glands. We learned that there are two layers to the skin. The outer layer called the epidermis has an upper layer of dead cells and an inner layer of rapidly dividing living cells. The living cells make keratin which is the tough fibrous protein that fills dead skin cells. The epidermis also contains cells called melanocytes which make melanin. Melanin is the brown pigment that gives skin its color and protects the skin from UV radiation.
Assignment: Complete Study Guide A Lesson 32.3.