| A | B |
|---|
| Hygiene. | includes the actions you take to improve or maintain your health.Keeping your body clean is an example of good hygiene. |
| HealthyTeeth,Gums.Figure 6.1 | Your teeth make it possible for you to chew and grind food.They aid in forming certain speech sounds.Your teeth shape and give structure to your mouth.Your gums anchor your teeth and keep them in place,below the gum line. |
| Plaque. Figure 6.2 | Is a soft colorless,sticky film containing bacteria that grows on your teeth.The germs in plaque cause bad breath,and tooth decay,and gum disease |
| Fluoride. Figure 6.3 | is a substance that fights tooth decay.You should brush,at least twice a day,and floss once a day.Use toothpaste that contains fluoride. |
| Healthy Skin. | the biggest organ in your body is your skin.The skin acts as a waterproof shield that defends your body against germs,it mantains your body temperature,allows you to feel,sense pressure and temperature. |
| Layers of the Skin. Figure 6.4 | It has many parts.Epidermis.Dermis.Melanin.Oil glands,Sweat glands,and Blood vessel. |
| Epidermis. | is the thinner outer layer of the skin. |
| Dermis. | is the thicker layer of the skin.The most important part of skin care is cleansing. |
| A sunscreen. | is a cream or lotion that filters out some UV rays.Choose sunscreens with a sun protection factor (SPF) of 15 or higher. |
| Acne. | is a skin condition caused by overly active oil glands.This is due to increased hormone production during the teen years. |
| Healthy Hair. | Your hair is made up of a substance called keratin.The roots of the hair are in the dermis,and are called folicles.The part of the hair that you can see is the shaft. |
| Dandruff. | Two conditions that can affect the health are dry or oily scalp.Dandruff.is the flaking of the outer layer of dead skin cells. |
| Your nails. | like your hair,your fingernails and toenails are made of a tough substance called keratin. |
| The cuticle. | around the nail is a nonliving band of outer skin called the cuticle.Never bite your nails. |
| Healthy Eyes. | Your eyes are your windows to the world.They allow you to take in millions of bits of information,which are sent to your brain. |
| The Eyes. Figure 6.5 | The many parts of eye work together to tell you about the world around you.Parts of the eye are.Sclera.Cornea.Iris.Pupil.Lens.Retina,and Optic nerve. |
| Farsightedness. | is the ability to see abjects at a distance while close objects look blurry. |
| Nearsighted. | this is the ability to see objects close to you while distant objects look blurry. |
| Astigmatism. | a misshaped cornea or lens causing objects to look wavy or blurred.Eye problems are usually corrected by using glasses or contact lenss.An eye doctor can determine if you need corrective lenses. |
| Healthy Ears. | Like your eyes,your ears allows you to receive information.Your ears also help you keep your balance.Balance is controlled by the semicircular canals,tubelike structures in the inner ear.The ears carry sound to the brain. |
| The Ears. Figure 6.6 | the different parts of the ear and what they do are shown.Outer Ear.Middle Ear.Inner Ear. |
