structure of skin 106
Unit 106
Basic make-up
application
Lesson duration is: 4 minItems in this lesson
Unit 106
Basic make-up
application
To complete unit 106 Basic make-up
2
Today we will cover
Structure of the skin
Functions of the skin
The skin
The skin is the largest organ in your body.
If it was laid out on the floor it would cover nearly 2m squared!!!!
What is the largest organ of the body?
Lung
Skin
Kidney
Heart
What area would your skin cover if laid out flat?
15m
1m
2m
20m
The structure of the skin
There are 3 layers of the skin.
In your groups, use the textbooks to identify what each one is.
You have 3 minutes!!!!
3
minute
00
second
The structure of the skin
The 3 layers of the skin are:
Epidermis
Dermis
Subcutaneous layer
The epidermis
The epidermis is the outer layer of skin (the part we touch)
It does not have a blood supply
Your epidermis is replaced every 28-30 days
About 90% of house dust is made up of the epidermis which you have shed!!!!!!!!!
The main function of the epidermis is:
Protect the body from harmful substances
Provide a waterproof coating
Produce melanin which helps protect skin from the suns rays
List the 3 main functions of the epidermis
The Epidermis
The epidermis is made up of 5 layers. Those of you progressing to beauty will need to know these layers, both common and Latin names!!!!!!!
Stratum corneum (horny layer)
Stratum Lucidum (Clear layer)
Stratum Granulosum (granular layer)
Stratum Spinosum (prickle cell layer)
Stratum Germinativum (basal layer)
A quick way to remember
You can use this rhyme to help you remember the Latin names of the layers.
The Dermis
The dermis is below the epidermis
It provides strength and elasticity to the skin.
It contains lots of structures including:
Nerves
Sweat glands
Hair follicles
Sebaceous glands
Task
Use your textbook to find out about the following:
Sebaceous gland
Arrector pili muscle
Sweat gland
You have 5 minutes.
5
minute
00
second
Cross section of the skin
SEBACEOUS GLANDS
Sebaceous glands produce the natural oil called sebum which protects and conditions the hair. The average hair follicle contains up to 3 glands. Overactive sebaceous glands, more than 3, can cause excessively oily hair.
SWEAT GLANDS
Sweat glands travel from the subcutaneous layer, through the dermis and up to the epidermis. They contain water which is released as perspiration through sweat pores to cool us down when we are hot.
Cross section of the skin
ARRECTOR PILI MUSCLE
This muscle is attached to the hair follicle and the epidermis. If we are cold or scared the muscle contracts and causes the hair to lift. This traps a layer of warm air between the hairs and protects from the cold.
HAIR
The hair you can see on your body (arms, legs, scalp etc..)
The Subcutaneous layer
The subcutaneous layer is a fatty layer attached to the dermis.
Its function is to keep us warm and to provide nutrients via the blood supply.
Skin Layer Task
Time to create a model of the skin.
Colour in the skin and if you like use colour coding for the labels.
Cut down any SOLID lines.
Score down and dotted lines with a nail/ruler.
Bend your large piece to look like this: -------------------------->
The 2 smaller pieces will fit into the holes either side of the larger piece. Glue/tape these into place.
Glue your large hair and nerve pressure sensor onto the front of the skin model
Make small holes on the top of the model where the crosses and insert the smaller hairs so that they stick up. They should look a bit like the large image to the right.
Functions of the skin
Functions of the skin
The skin has 7 main functions
These can be remembered by using the acronym SHAPES.
In your groups, find out what each letter stands for. You could use google, AI or the text book.
s.h.a.p.e.s
Sensation- The skin helps us to identify heat, touch and pain
Heat regulation- The skin controls the body’s temperature
Absorption- The skin absorbs UV rays from the sun and turns them into vitamin D
Protection- The skin protects the rest of the body from all the weather elements. It is also the first line of defence against bacteria, viruses and foreign bodies
Excretion- Toxins and waste are excreted through the sweat glands which are found in the skin
Secretion- Sweat and sebum are secreted onto the skin.
SHAPES
What functions of the skin can you remember?
List them here.
Do now Task...........
Please complete the 2 wordwall activities set on google classroom.
You can do these as many times as you like!!!!!!
Use your textbook for unit 106 to help you complete these if needed.
Begin Task A
Use you time now to plan out and start your task A assignment.
