Integumentary System

Protecting the inside of your body

What does the integumentary system do?

• Protect the body’s tissue and organs.• Protect against parasites and other animals entering the

body.• Protect the body from dehydration• Protect the body against changes in temperature• Help push out waste materials through perspiration• To feel touch, pressure, pain, heat, and cold • Protect the body against sunburns by making melanin• Make vitamin D from sunlight• Store water, fat glucose, and vitamin D• Gives shape to the body• Makes new cells when you are injured.

Skin

• Your skin is the largest organ in your body.

It is 12-15% of your body weight.

dust

The dust in your house is from your dead skin cells. 40000 skin cells fall off your body every minute.

Your palms and the soles of your feet have more skin.

Bad skin habits

• 1. Smoking

• 2. Not sleeping enough

• 3. Forgetting to remove makeup

• 4. Not wearing sunscreen

• 5.Over-exfoliating ขดั ผิว

• 6. Using the wrong skin care products

Skin cancer

Skin cancer is often caused by UV radiation from the sun.

Your skin has the sense of touch

Making vitamin D

melanin

Melanin gives your skin its color. It protects your skin from the sun’s UV rays.

Perspiration (sweat)

Our skin sweats to keep us cool and to push out waste and toxins.

Collagen

• Collagen makes your skin strong, smooth and supple.

• When we get old, we lose it and get wrinkles.

Collagen products- Do they work?

These things are expensive, and there is no evidence that they work. Don’t waste your money!

What should you do for your skin?

• Eat nutritious foods and drink lots of water.

• Sleep well

• Stay away from cigarette smoke and too much sun.

fingernailsOur nails are very useful tools.

They are made of keratin.

They protect our fingers and toes.

The color of our nails tells a lot about our health.

fingerprints

Every person has unique fingerprints.

Fingerprints help catch criminals.

hairHair grows about 1.25 centimeters every month.

Hair is made of a protein called keratin.

We have as many hairs as a monkey on our body, but most of our hairs are very thin.

Why do we have hair?

• Hair keeps us warm in the winter, and protects our head from the sun.

Comb your hair and massage your scalp

This brings more blood and oxygen to your scalp, making it healthier.

Don’t tie your ponytail too tight

This woman has lost some hair.

Dry hair

Using a blow dryer, or dyeing your hair can damage it.

I think natural is best.

Grey hair

Your hair stops making pigment when you are older.

Going gray is not a bad thing.

pores

Your pores are the small holes in your skin that let sweat out.

pimples

A pimple happens when extra oil gets trapped in your pores.

Questions

• Why do we have hair?• How can we keep our hair healthy?• What do we have on our fingertips, that is different for

everyone?• Are whitening products good for our skin?• What is in our skin that makes it dark or light?• What is the largest organ in our body?• What does our skin do?• Why do we sweat?• What happens when oil gets trapped under your

pores?