1. Grading The Second Layer
FRONT (picture)
Colored 3 points
Labeled 2 points
BACK (crossword puzzle)
sweat 1 point
temperature 1 point
water 1 point
layer 1 point
epidermis 1 point
dermis 1 point
cools 1 point
follicles 1 point
vessels 1 point
sun 1 point
TOTAL ____/15
EXTRA CREDIT
Research 1 point each
Bonus I WILL GRADE
CB: __________________________________________

2. S Parts K Functions I Care N Problems Foldable: SKIN
Title Foldable – SKIN
Subtitles – Parts, Functions, Care, Problems
Cut each fold on front.
Color/Decorate cover for homework with 3 or more colors.
Due Tomorrow!
GLUE IT ON Page 89 all the way to the right!

3. SKIN - Parts PARTS – page 122 There are 3 layers of the skin.
1) EPIDERMIS: outermost/top layer.
skin color - melanin
hair
pores-tiny openings in the skin.
sweat & hair come out through here.
dead cells (75% of dust is skin)
growth layer – new skin
Surface area = 2 square yards, 5 ½ lbs
2) DERMIS: second layer, middle, largest layer (4x thicker)
blood vessel - carry blood to the surface of the skin to give it nourishment it needs
nerve endings - feelings/pain
hair follicles - small sacs in the dermis that produce hair.
5 million hairs
100,000 on your head
sweat glands -releases water to control your body temperature
3 million sweat glands
oil glands (sebaceous gland)-produce oil to keep skin soft and prevent cracking and dryness
3) FAT (SUBCUTANEOUS) TISSUE

4. SKIN - Functions FUNCTIONS – page 123
Skin is the largest organ in your body!
The skin has many important functions.
Waterproofing – skin keeps H20 out of the body.
Vitamin D Formation – your skin uses the suns light to produce small amounts of Vitamin D – which helps build strong bones and teeth.
- milk & calcium
- osteoporosis (soft bones)
Protection – skin protects you against germs and injuries
- like armor
- if we didn’t have skin our insides would shrivel up like raisins
Temperature Control – blood vessels in the skin enable your body to retain and/or release heat and perspiration (sweat) helps keep your body cool.
- Normal body temperature = 98.6 degrees
- thermostat
Sensation – the skin contains nerve endings that give you information about touch and temperature.

5. SKIN - Care
CARE – page 124
Taking care of your skin can help you feel good about yourself. Here are some skin care tips:
1) Keep Clean
(summarize paragraph in your own words)
2) Eat properly and stay physically active
3) Protect yourself from the sun.
4) If you’re going to be in the sun, wear sunscreen and reapply it every hour.
5) Avoid body decoration such as tattoos and piercings.

6. SKIN - Problems PROBLEMS – page 123
The biggest skin problem for teens is acne.
ACNE: Skin condition that occurs when hair follicles become clogged with oil, dead skin, and/or dirt.
Care for Acne: (write 2 sentences)
Types of Acne and How they Form:
Pimples (red, swollen, bump)
Whitehead (clogged pore with sebum (oil) and dead skin cells – pus)
Blackhead (whitehead is exposed to air and hardens)

7. Grading SKIN Project Doors: S, K, I, N 4 points Colored 4 points
(S) Door: Labeled Parts 1 point
Three Definitions 3 points
(K) Door: Labeled Functions 1 point
5 Functions 5 points
(I) Door: Labeled Care 1 point
5 Care Tips 5 points
(N) Door: Labeled Problems 1 point
3 types of Acne 3 points
Neatness: No wrinkles/tears 2 points
TOTAL POINTS EARNED 30 Points _______