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CH. 13 Personal Health Care

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Presentation on theme: "CH. 13 Personal Health Care"— Presentation transcript:

1 CH. 13 Personal Health Care

2 SKIN---Structure *Skin is the largest organ on the human body.
*The skin consists of two main layers: the epidermis and the dermis. *Cells in the epidermis make lipids which makes your body waterproof. * Dermis contains the sebaceous glands which helps skin from drying out. *Subcutaneous layer- a layer of fat and connective tissue located beneath the dermis.

3 Your Skin Epidermis Dermis Subcutaneous Layer

4 SKIN--- Function Skin protects you from pathogens, regulates your body temperature, and helps you feel sensations. Protection- Barrier to prevent bacteria and viruses from entering. Temperature control- Skin dilates to allow heat to escape. Sensation- Major sense organ: Pressure, pain, heat, cold Immunity-macrophages destroy invading pathogens. Excretion- SWEAT is excess water and dissolved wastes. Vitamin D synthesis- makes VD when exposed to UV radiation Interpersonal communication- Automatically expresses some emotions ( pale & blushing)

5 Keeping your Skin Healthy
Wash face 2 times a day Wash you body everyday AVOID touching your face with your hands Avoid allergic reactions. Eat plenty of vitamins, minerals: Vitamin A Milk Green and yellow vegetables Liver

6 Skin Problems Acne- clogged pores become infected and pus forms.
Warts are caused by viruses and can be spread through direct physical contact. Boils form when hair follicles become infected. Do not burst or squeeze a boil. Dermatitis, or eczema, is inflamed skin usually caused by an allergic reaction. Vitiligo occurs when patches of skin lose melanin and have no pigment.

7 Skin Problems Fungal infections are spread by contact with skin, clothing, or in public showers. Moles are usually harmless, but they can develop into melanoma, which can be deadly.

8 Melanoma Tanned skin is a sign that skin has been damaged by UV rays.
Prolonged exposure to UV rays can lead to skin cancer. Early detection and treatment are critical in controlling the spread of melanoma. Regularly checking the appearance of your moles is important for the early detection of melanoma.

9 ABCD’s of Melanoma A B C D Asymmetry Border Irregularity Color

10 Skin Problems Asymmetry Border Irregularity Color Diameter
The ABCD’S of Melanoma An imaginary line drawn through the center of the mole does not produce matching halves. Asymmetry Border Irregularity Non-cancerous moles have smooth edges. Suspect moles often have irregular edges. Look for moles that are intensely black, possibly with a bluish tint, or that have an uneven color. Color Check for moles that are wider across than the width of a pea. Diameter

11 HAIR Hair structure- Dead cells. Living cells in the epidermis make new hairs and cause hair to grow. Hair grows on every surface of the skin, except for the palms of the hand and the soles of the feet. Hair function- The eyebrows and eyelashes protect the eyes from dust and other particles.

12 Hair Problems Dandruff- Dead skin cells that are shed as sticky white flakes. Head lice- Tiny parasitic insects that live in scalp hair.

13 Nails Nail Structure- Your fingernails and toenails are made of closely packed dead cells that contain keratin. Nail Function- help protect your fingers and toes.

14 Lesson 2 – Teeth and Mouth
Parts of the tooth The periodontium supports the tooth and holds it in place. periodontium is made up of the gum, ligaments, and the jawbone. Three main parts to every tooth Crown- visible portion of the tooth Neck- between the crown and root Root- In the gum

15 Parts of a Tooth Enamel- hard substance made of calcium. Dentin- beneath enamel. It is a layer of connective tissue that contributes to the shape and hardness of a tooth. Protected by the overlying layers of dentin and enamel, the pulp extends into the root canal.

16 Parts of a Tooth Crown Neck Root

17 Parts of a Tooth enamel dentin gum gingivia
pulp cavity with nerves and vessels cementum periodontal ligaments periodontal membrane root canal bone

18 Keeping Teeth Healthy Oral hygiene, which includes brushing and flossing your teeth, is necessary for healthy, clean teeth. Tooth decay occurs when the enamel is destroyed and bacteria penetrate the tooth. Plaque damages the tooth by coating it, sealing out the saliva that normally protects the tooth from bacteria.

19 Keeping Your Teeth and Mouth Healthy
If plaque builds up, acids produced by bacteria break down the tooth enamel, resulting in a cavity. If decay spreads down to the pulp, the tooth may have to be removed.

20 Mouth Problems Halitosis can be caused by eating certain foods, poor oral hygiene, smoking, bacteria on the tongue, decayed teeth, and gum disease. Gum disease, or periodontal disease, is caused by bacterial infection. *When plaque hardens, it builds up tartar, a hard, crustlike substance, and causes the gums to become irritated and swollen. *This is called gingivitis. If left untreated, the bone and tissue that support the teeth are destroyed, and teeth can be lost.

21 Lesson 3- Your Eyes Your eyes sit in bony sockets, called orbits, at the front of your skull. A layer of fat cushions each eyeball inside its socket. The lacrimal gland secretes tears into the eye through ducts. Tears keep the surface of the eyeball moist and clear of foreign particles.

22 Parts of the Eye sclera cornea choroid iris vitrius humor pupil lens
optic nerve retina cornea iris pupil lens aqueous humor

23 Lesson 3- Eyes Rods are light sensitive cells that allow us to see in dim light. Cones are light sensitive cells that allow us to see in bright light and in color .

24 Parts of the Eye Words in black are definitions
Protects the inner eye and supports and shapes the eyeball Sclera Cornea Bends and focuses light before it enters the lens Choroid Lines the inside of the sclera Iris Contracts and dilates the pupil Regulates the amount of light that reaches the inner eye Pupil

25 Parts of the Eye Words in black are definitions
Retina Contains light-sensitive cells Optic Nerve Transmits nerve impulses to the brain Lens Helps refine the focus of images on the retina Aqueous Humor Provides nutrients to the eye Helps the eyeball stay firm and keeps the retina in place Vitreous Humor

26 Vision – 20/20 Nearsightedness, or Myopia Farsightedness, or Hyperopia
Common Vision Disorders Nearsightedness, or Myopia The inability to see distant objects clearly Farsightedness, or Hyperopia The inability see close objects clearly Astigmatism Blurred vision Strabismus Eyes off-center, turned inward or outward Detached Retina Blurred vision or bright flashes of light

27 Vision Infections and Viruses Glaucoma Cataracts Macular Degeneration
Common Vision Problems Infections and Viruses Swelling, irritation, blurred vision, change in sclera color Cloudy, impaired vision, can cause permanent damage Glaucoma Cataracts Foggy vision Macular Degeneration Vision loss

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