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The I ntegumentary System

The I ntegumentary System . Skin Nail Hair . SKIN TERMS. Epidermis Dermis Subcutaneous layer Melanin Pores Sebum. 7. Dermatologist 8. Hair follicles 9. Oil glands 10. Sweat glands 11. Adipose tissue.

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The I ntegumentary System

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  1. The Integumentary System Skin Nail Hair

  2. SKIN TERMS • Epidermis • Dermis • Subcutaneous layer • Melanin • Pores • Sebum 7. Dermatologist 8. Hair follicles 9. Oil glands 10. Sweat glands 11.Adipose tissue

  3. Functions of Skin in brief • Shields against water • Defends against germs • Prevents bacteria & viruses from entering the body • Maintains homeostasis • Sweating/shivering • Provides sensory input • Heat, pressure, pain, touch… • Formation of vitamin D

  4. Parts of Skin • Epidermis: outermost layer • Dermis: thick inner layer • Subcutaneous layer (hypodermis): layer of fat tissue or adipose tissue

  5. Taking Care of Skin Healthy skin is the result of: • Taking shower regularly • Use of very mild, moisturizing soap • Use of deodorant and/or antiperspirant • Use of antibacterial soap to clean your face to prevent acne • Use of sunscreen to prevent sunburn

  6. Types of Acne • Whitehead: a pore that is plugged with sebum(oil). • Blackhead: a pore that is plugged with sebum and exposed to air. • Pimple: a clogged pore that is filled with pus.

  7. Common Skin Problems • Acne (caused by bacteria) • Cold sores (caused by herpes virus) small, painful blisters commonly called cold sores or fever blisters. • Dandruff (dead skin cells of the scalp) • Ingrown toenails • Sunburn (UV rays)

  8. Common Skin Problems • Ringworm (caused by fungus) • Athlete’s foot (caused by fungus) • Head lice (insects)

  9. Skin Problems Sunburn: • Sunburn is caused by ultraviolet rays. • Ultraviolet rays come from sunlight. • The lighter the skin is, the faster it burns. • Ultraviolet rays make skin age and wrinkle faster. • Sunburn can lead to skin cancer.

  10. MOLES & Freckles • Moles are very common spots on the skin. These are cells with high concentration of melanin. • If you notice changes in a mole's color, height, size, or shape, you should have a dermatologist evaluate it.

  11. Ultraviolet Rays

  12. Your Hair • Made of dead cells • The roots are in the dermis, located in small pockets called follicles • Gets its color from melanin • Can be wavy, curly, or straight

  13. Your Nails • Dead cells that grow out of living tissue • Cuticle: a nonliving band of epidermis that grows around the nail

  14. Mouth & Teeth • Tasting • Digestion: teeth crush and grind food, saliva moistens and chemically breaks it down • Speech

  15. The Tooth • Crown: the part you see • Neck: part between crown & root • Root: part of tooth inside the gum

  16. Problems of the Teeth & Mouth • Tooth decay or cavities are holes, or structural damage, in the teeth • Gingivitis (gums become red and swollen and might bleed) • Malocclusion (teeth in upper and lower jaws do not align properly) • Halitosis (bad breath)

  17. What causes tooth decay? • Poor diets (eating a lot of sugar) • Smoking • Lack of good oral hygiene (not brushing/flossing) • Irregular/not visiting the dentist

  18. Taking Care of Your Teeth & Mouth • Brush your teeth properly after eating. • Floss between your teeth. • Reserve starchy foods & foods high in sugar for mealtimes. • Have regular dental checkups.

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