Download Skin

Skin
Pore
Hair Follicle, Oil Gland
Epidermis
Dermis
Arrector Muscle
Sweat Gland
Subcutaneous Layer (Fat)
Sensory Nerves
Arteries and Veins
Skin Dermatology
Acne
• Acne
Warts
• Caused by virus
• Contagious
• OTC Meds/Prescription drugs
Ringworm
Caused by fungus
Dry, itchy circles on skin
Contagious
OTC Meds, Prescription drugs
Athlete’s Foot
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Caused by fungus
Can be contagious
Thrive in warm, moist conditions
OTC meds/prescription
Bumps and Bruises
• Caused by blows to skin
or internal injury
• Damaged tissue
• Treat with I.C.E.
• Treat with heat
Contact Dermatitis
• Leaves of three…
Let it be.
Sunburn/Burns
• 1st degree: red, tender/painful to touch
• 2nd degree: red, blistered, painful
• 3rd degree: charred tissue, very painful,
emergency situation
1st degree burn
2nd degree burn
3rd degree burn
Skin Cancer
1. A sore that will not heal
2. A change in size or color of wart or
mole
Untreated Skin Cancer
General Rules for Prevention of
Skin Cancer
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Keep covered when outdoors
Use sunscreen ….at least spf 30
Avoid hottest times of day when possible
Wear a big hat to protect face, neck, and head
Use sunscreen!!!!
Check body for changes on skin surface
Don’t think…”It won’t happen to me”. Skin
cancer is the most common type of cancer that
people get.
Toooo much sun!
The Body’s Tough Covering
The skin performs several major functions:
1. It covers the body and prevents the loss of water
2. It protects the body from injury and infection.
3. It helps regulate body temperature, eliminate wastes,
and gather information about the environment.
4. It makes vitamin D. This occurs when skin is exposed
to ultraviolet rays
Protection
• The skin covers the body and provides a protective
barrier that protects the underlying tissues from:
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Physical abrasion
Bacterial and viral invasion
Dehydration
Ultraviolet (UV) radiation
• Hair and nails also have protective functions.
Body Temperature and
Homeostasis
• Evaporation of water from the skin surface
helps lower an elevated body temperature
to normal.
• Changes in the flow of blood to the skin
also help regulate body temperature.
Sensation
• The skin contains abundant nerve endings and receptors
that detect stimuli related to temperature, touch,
pressure, and pain.
• The smallest stretching of a cell membrane on our
fingertip is transmitted as a cellular signal to our brains.
Excretion
• Besides removing heat and some water
from the body, sweat is also a vehicle for
the excretion of a small amount of salt and
several organic compounds (fats and
proteins)
Vitamin D
• Vitamin D is created when molecules in
the skin are activated by UV rays in the
sunlight.
• Vitamin D contributes to digestion by
helping digestive system absorb calcium
from food.
Skin Structure
• The structure of skin consists of two main
layers, the epidermis and the dermis.
• Beneath the dermis is a layer of
subcutaneous tissue (fat), sometimes
called the hypodermis.
Skin Health
• Keep it clean. Bathe regularly, especially after
physical activity.
• Body odor changes during adolescence due to
release of hormones during puberty. Others
notice!
• Eat a proper diet. Less junk foods, more food
that is full of good nutrients.
• Drink plenty of water
• Exercise regularly
• Get plenty of sleep