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The Human Skin

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Amanda Ball

on 23 January 2014

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Transcript of The Human Skin

The Human Skin
Fast Facts:

The Integumentary System
All over exterior of the body
To protect the body, regulate body temperature, and permit the sensation of touch
adult - 1.8 m , 3.6 kg
child - size depends on growth status
thickness - 1.27 mm
- outermost layer of live skin cells
-provides waterproof barrier
-contains cells that make up skin tone
-second outermost layer of live skin cells
-contains connective tissue, hair follicles, sweat glands, sebaceous glands
Hair Follicles
Sweat Glands
-body's personal cooling system
-produce sweat
-sweat stays on skin until it evaporates
Sebaceous Glands
Adipose Tissue
Skin accounts for around 15% of your body weight.
The thickest skin is on the soles of your feet. (1.4 mm)
Every 28 days, your skin completely renews itself.
Skin is the largest organ in the human body.
The skin has over a trillion individual bacteria.
On average, 14 species of fungi live on the skin between your toes...
Fast Facts:
Who Does It Impact:
Societal Impact:
Survival Rate:
-common cream used to treat eczema contains corticosteroid
-cream relieves itch and pain
-corticosteroid has been shown to cause thinning skin, stretch marks, and dilated (widened) vessels
- avoid allergens
- use gentle, unscented soaps and creams
- avoid scratching (keep your nails as short as possible)
- moisturize after you bathe
- don't let sweat stay on skin
- wear clothes that let your skin breathe
- use a humidifier to add moisture to dry air
39% of 14 - 17 year old eczema patients reported being teased or bullied for their eczema.

44% of adults with eczema are embarrassed by their appearance.

Approximately 1 792 713 Canadians have eczema.

75% of children with atopic eczema develop hay fever or asthma.

Up to 17% of Canadians suffer from atopic eczema at some point in their lives.

10-20% of infants have eczema.

About 3% of adults still have eczema from their childhood.

1 in 10 people will have an eczemic rash at one point in their lifetime.
Signs and Symptoms
-commonly appears on face, as well as the
back of knees, wrists, hands, feet, and elbows
-can appear anywhere
-affected area appears dry, thick, and/or scaly

Technologies for
Diagnosing Eczema:
-producers of hair
-a.k.a. oil glands
-secrete sebum (oily substance)
-prevent germs from entering the body through the skin
-a.k.a. fatty tissue
-stores energy as fat until needed
-cushions, insulates body
-sense heat and pain
-sense and transmit impulses to
other parts of the skin and the
rest of the body
-skin condition
-causes skin to become irritated, inflamed
most common is atopic dermatitis
Fair skinned people:

skin turns red and then brown
Dark skinned people:

area is lighter or darker than normal

rash may have oozing or crusting, mainly on face and scalp, though patches may appear anywhere
-exact cause is unknown
-thought to be linked to overreactive response from immune system
-some people have flare-ups from contact with allergens
-more common in families with history of asthma and allergies
-some say it is caused by defects in skin's barrier, allows germs in
-most kids outgrow by tenth birthday
-more common in developed countries
-developed countries have more allergens in products (perfumes, soaps, etc.)
-bigger impact than many people realize
-sleep deprivation from itching in the night (both parents and children)
-selfconciousness in teenagers and young adults (not wanting to show rash)
-rarely fatal if treated properly
-have been few reported cases of death
-eczema can exhaust immune system

Gloria Thomas
-nine months old
-had eczema
-parents didn't treat it
-developed eye infection
-died because immune system couldn't handle it
-parents charged with gross criminal negligence
Blood Tests:
-look for high levels of eosinophils
(EE-OH-ZIN-A-PHILS), blood cells part of immune reactions
-look for IgE antibody, produced by immune system

Skin Biopsy:
-rules out other skin diseases, such as cancer
-skin is removed and then examined by pathologists
Full transcript