Flashcards in Skin Layers Plus Function Deck (51):
What are the layers of the skin?
Hypodermis (fatty tissue, adipose, subcutaneous tissue)
How many layers in the epidermis?
What are the layers of the epidermis?
Stratum germinativum (basale)
What is the stratum germanitivum?
Connected with stratum spinosum both are basal layer
What it's keratinization?
When the cells go up to the surface of the skin
What is desquamation?
When cells sloughs off
The stratum germanitivum and spinosum are connected together (basal layer)
And make melanocytes
Middle layer of epidermis
Cells are dead
It's a see through
Because we need some Vit D in our body
It has 15 to 20 layers
Dead skin cells
How many melanocytes do we have?
15 thousand per sq ft
Melanocytes it's our natural sunblock
How many days do our skin cells surface to skin?
28 days but the older we get the slower it keratinize
Baby it's 3-4 days
How many layers in the dermis?
Reticular and papillary layer
Upper layer of the dermis
Contains more capillaries (touch heat cold )
2nd layer of the dermis
Composed of water
Has fibroblast cells
In the reticular layer of the dermis
1 is a fibrocyte
Produces collagen (70%) and elastin (30%) and gligcocinimoglycans which is a sugar molecule holding water to skin
How do fibroblast works?
After 25 we don't produce any collagen or elastin
Once you hit menopause after 5 yrs we lose 30% collagen +elastin
What are floaters?
Floaters It's collagen floating around
If we see them we need to decrease sugar and take antioxidants and vitamins
How can we trigger the fibroblast ?
Anytime we do trauma to the skin we stimulate the fibroblast
Chemical peel (deep peel)
Last (dr does)
It's a leukocyte (white blood cells)
In the dermis
Devours foreign material such as bacteria to protect body
Thus removing dead debris
1st line of defense
Subcutaneous tissue other names ?
What it's a septae?
It's a division connects the adipose (hypodermis) with the dermis
What happens with the septae?
Over time it can stretch like a rubber band
When septae goes up we get cellulite
What's the diff between fat and cellulite ?
It's location. When it's up we get cellulite
What are fat cells?
Fat cells store lipids
It has one nucleus in one side and the remainder is filled with lipid (glisterol, h20, CO2, toxins)
More numerous in the hypodermis
What are the chromatatophores?
In the dermis
When the epidermis is heavily pigmented they obtain pigment from the melanocytes in the epidermis
How do the chromatatophores get the pigment?
From the epidermis it goes down to the dermis and it's hard to remove it produces very fast
You need a fading cream (hydrocortisone licorine extract )
Why does septae break ?
What’s the responsibility of the skin?
Excretion of sweat
Secretion of oil
Storage of fats
Growth of appendages (hair nails sweat oil gland )
What it’s the acid mantle?
It’s dead skin
Oil and sweat gland make up acid mantle
Protects us against other pathogens
How many glands in a follicle ?
Oil gland (release oil)
Sweat gland ( h20 minerals and electrolites )
Ph of the skin?
4.5 to 6.5
0 1 23 it’s acid
10 11 12 more alkaline
Dry flaky (soap water ?
What does the oil gland do in the follicle ?
Oil goes up to surface of pore
Sweat gland do? In the follicle ?
Releases water , electrolytes goes up surface of skin
How many types of
In the hair follicle
Another sweat pore
If room gets hot
Gives u goosebumps
It pumps water after waxing
What activates melanocytes ?
Where are the melanocytes present?
The gernanitivum and spinosum it’s the basal layer
Fitz 1 2 and 3. What type of spf ?
Fitz 4 5 6? What type of spf?
Spf 15 bcuz u could handle more sun
Don’t burn that much
What are cytokines ?
Messengers communicates cells tells cells what to do
Epidermis is more oil loving or water loving ?
Is dermis more oil loving or water loving ?
Does hyaloronic acid penetrate deep?
No because epidermis is more oil loving
Oil and water don’t mix
We need to use hyaloronic in a liposome
How does the filler work?
Filler goes inside the dermis
It has hyaloronic acid
To go down to the dermis
How do we put product into the dermis?
How does the spf work ?
Ex spf 30
15 mins u burn
Apply spf 30
= 450 mins after u apply sunblock