1. Integumentary System EQ: What are the components of our skin?

2. Root Words Derm Skin Dermis Folic Small bag Follicle Kerat Horn
Keratin
Melan
Black
Melanin
Seb
Grease
Sebaceous gland

3. Integumentary system
System that includes the skin, which protects the body from the outside and is vitally important to other organs

4. Epidermis
Outer layer of skin, composed of stratified squamous epithelium

5. Dermis
Thicker, inner layer of skin which includes: elastic fibers, epithelial tissue, smooth muscle tissue, nervous tissue, and blood

6. Subcutaneous Layer
Connective tissue (Adipose tissue) that binds the skin to underlying organs

7. Keratinization
Older cells die and harden. Cytoplasm is filled with a tough Keratin protein.
Is eventually shed from top layer of skin

8. Keratinization

9. Melanin
Specialized cells called Melanocytes in the epidermis produce this dark pigment that provide skin color
All races have same number of Melanocytes, but genetic differences control amount of melanin produced

10. Albinism Inherited disorder characterized by little or no melanin production

11. Melanism
Mutation that causes excess amounts of melanin production

12. Sebaceous Gland
Glands near the hair follicles that secrete an oil called Sebum. Sebum helps keep hair and skin soft, pliable, and waterproof

13. Sebaceous Gland

14. Sweat Gland
Glands that secrete water, salt, and oil to help maintain temperature homeostasis

15. Eccrine Gland
Most abundant sweat gland. Found on forehead, neck, and back.
Produce sweat on hot days or during intense physical activity

16. Apocrine Gland Other type of sweat gland, developed during puberty.
Secretes when person is upset, frightened, in pain, or during sexual arousal.

17. Left Side Activity Draw a section of your skin
Label the different layers
Label different parts (Refer to the first slide)
Use color