The Integumentary System

3. Portion of hair below the surface.
5. The _________ of the hair is an indentation in the bulb that contains blood vessels to provide nourishment to hair.
6. Glands that provides waterproofing and protects ears from debris.
7. The glands that secrete sebum to keep skin soft, to prevent water loss and to protect against bacteria and fungus.
10. Enlarged structure at the base of a hair follicle.
11. Cells that make up most of the epidermis. They produce a tough type of protein.
14. Protects the body, produces Vitamin D, is involved in temperature regulation and is a major sensory organ.
16. Cells that produce the pigment that gives skin and hair their color.
17. Made of fused, dead keratinized epidermal cells. Protects the skin, helps keep us warm and can be styles in many different ways.
18. a skin and hair pigment that comes in various colors including brown, black, yellow and red.

1. Part of hair that surrounds the roots; is made of epidermal cells.
2. Layer of epidermis where cells are continuously dividing.
4. Dead, hard, tightly packed keratinized epidermal cells that protect fingers and toes, and help us grasp things.
8. Cells in the Stratum Spinosum that are active in the immune system.
9. Glands that help maintain temperature homeostasis.
12. Smooth muscles that cause hair to stand up when the skin gets cold and causes goose bumps.
13. A group of nerve endings surround each hair follicle that are sensitive to touch.
14. Part of hair that projects from the surface of the skin.
15. The part of the hair follicle where keratinocytes divide and reproduce to form the hair shaft of growing hair.