Anatomy of the Skin Flashcards
Mention the 6 functions of the skin:
S - Sensation H - Heat regulations A - Absorption P - Protection E - Excretion A - Secretion
How many layers do the skin have?
There are 3 layers of the skin
What are the layers of the skin called?
- The Epidermis
- The Dermis
- The Subcutaneous or hypodermis
What is epidermis?
The outermost layer of the skin
How many layers does epidermis have
Five layers, each layer has a specific function.
Name the 5 layers of epidermis
Clue: horny carol grapes peoples bum
Horny layer Clear layer Granular layer Prickle cell layer Basal layer
What is the basal layer?
Is where new skin cells known as “keratinocytes” are “born.”
Single layer column shaped
Clothes layer to Dermis
What is the Horny layer?
Top layer
Cells are continuously shed
Made up from flattened dead cells
What is the clear layer?
3-4 rows of dead flattened cells
Only found on the palm of the hands and soles of the feet
Cells here act as protectors in areas of friction
What is The granular layer?
Middle layer of epidermis
Cells gets squashed together and harden
It is 2-4 layer thick
Cells here begin to die and flatten.
What is the Prickle cell layer?
Sits on top of basal layer
Keratin and melanin is produced
10-20 cells thick with spines connected with other cells
What is Dermis referred as
The true skin
How thick is Dermis (true skin)
0.3 mm on eyelid, 3.00 on the back
Thickness depends on the location of the skin
Where is collagen and elastin placed?
Dermis layer
What is subcutaneous tissue?
It is a fatty layer underneath the skin
What is the function of Subcutaneous layer?
Fat cells store energy
This tissue protects underlying structures from damage
Provides insulation and warmth
Provides energy store should the body need it
Describe Skin Sensation
Five types of nerve endings with the skin to help identify: Pain Touch Heat Cold Light pressure
Describe Excretion
Waste products and toxins are eliminated from the body thought sweat glands
Describe Heat regulations
The skin helps regulate the body’s temperature by sweating and shivering.
Describe Secretion
Sebum (oil) and sweat are released on to the skins surface. Sebum keeps skin lubricated and soft.
Sweat and Sebum combined forms the acid mantle.
Describe Absorption
The skin absorbs ultraviolet rays helps formation of D vitamin.
Some creams, essential oils and medication can be absorbed through the skin.
Describe Protection
Skin produces pigment called melanin to protect the skin from to much UV light
Germs and Bacteria are prevented by protective barrier called acid mantle.
What is acid mantle made of?
Sebum and Sweat
How does the skin protect it selfs from too much UV light?
It starts producing pigment called melanin
Label skin diagram below
