Integumentary System

3. The thickened layer of skin adjoining fingernails and toenails, particularly at the base of the nail
4. the largest organ of the body that forms a physical barrier between the external environment and the internal environment that it serves to protect and maintain
7. the skin just under the free edge of your nail
9. is an inherited condition that leads to someone having very light skin, hair, and eyes
10. the visible part of the hair that sticks out of the skin
12. the major sweat glands of the human body
15. the thick layer of living tissue below the epidermis which forms the true skin
16. a dark brown to black pigment occurring in the hair, skin, and iris of the eye in people and animals
17. is the bottom layer of skin in your body
18. layer of translucent skin that is shed from the underside of the proximal nail fold as the nail grows

1. the surface epithelium of the skin, overlying the dermis
2. contract when the body surface is chilled and erect the hairs, compress an oil gland above each muscle, and produce the appearance of goose bumps
5. an organ in your skin that make and secrete sebum
6. a sweat gland that secretes a viscous fluid into a hair follicle
8. the vascular epidermis upon which most of the fingernail or toenail rests that has a longitudinally ridged surface often visible through the nail
11. a fibrous protein forming the main structural constituent of hair, feathers, hoofs, claws, horns, etc
13. a protective and waxy or hard layer covering the epidermis
14. the visible portion of the distal nail matrix that extends beyond the proximal nailfold
17. A shaft or opening on the surface of the skin through which hair grows