Skin structure and function re-cap

Skin structure and function re-cap.

Today, we are going to perform science experiments to understand the functions of the skin.



Differentiate and name the three primary layers of the skin.
Describe the main functions of each layer.
Explain the Role of Skin Appendages.
Understand their functions in maintaining skin health and regulating body temperature.
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Slide 1: Diapositive
Anatomy and physiologyFurther Education (Key Stage 5)

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Skin structure and function re-cap.

Today, we are going to perform science experiments to understand the functions of the skin.



Differentiate and name the three primary layers of the skin.
Describe the main functions of each layer.
Explain the Role of Skin Appendages.
Understand their functions in maintaining skin health and regulating body temperature.

Slide 1 - Diapositive

Brainstorm
In your groups, write down your current knowledge/understanding of the following key words;

Thermoregulation - Ther-mo-reg-you-lay-shun
Pathogen
Acid mantle
Corpuscle - cor-pu-ss-ul
Androgens
Testosterone

timer
2:00

Slide 2 - Diapositive

Key word task
Write one sentence for each key word used in the previous slide.  How do these words link with the skin structure and functions?
timer
4:00

Slide 3 - Diapositive

What are the 5 senses we have?
timer
1:00

Slide 4 - Question ouverte

Experiment 1
Perform a waxing tactile test on the person sitting next to you, what are the 2 senses you are detecting?
Using the test tubes, rest these against your partners skin, what are the 2 senses that are being felt? 
For the last sense, perform a petrissage movement on the palm of the hand, what is this sensation?
timer
5:00

Slide 5 - Diapositive

S is for sensation
The nerve endings within the skin allow you to identify sensations such as 
Pain, touch, heat, cold and pressure.

Slide 6 - Diapositive

Experiment 2
Put the apparatus available onto your skin, hold for a few seconds then lift it off.

What changes have occurred in your skin?

Can you describe how these changes have occurred?

If you finish early, click on the hyperlink titled' HEAT REGULATION' and explain how the skin regulates body temperature.
timer
5:00

Slide 7 - Diapositive

Structure and function of the skin - Task 1
Structure:
Draw and label the structure

E.G ; Sebaceous gland (draw  image here)
Describe the process that connects the structure and function: 

The sebaceous gland secretes a substance called sebum.  It is found in the dermis of the skin.


Function: Describe the function

Produces sebum which lubricates the surface of the skin and hair 
timer
5:00

Slide 8 - Diapositive

The sebaceous gland secretes sebum which lubricates the surface of the skin and hair.
The arrector pili muscle is attached to the wall of the hair follicle.  This muscle contracts, which causes the hair to stand on end.  This causes goose bumps and traps a layer of warm air close to the surface of the skin which helps keep the body warm. 
The hair shaft is the visible part of the hair on the surface of the skin. 
Hair follicle houses the hair.
Sweat gland excretes waste products in the form of sweat and helps regulate body temperature. 

Slide 9 - Question de remorquage

Slide 10 - Vidéo

Re-cap task
In your groups - draw and label a cross section of the skin to include the skin layers and appendages.
State their functions and explain how these contribute to the functions of the skin.  

Slide 11 - Diapositive

Slide 12 - Diapositive

hair shaft

Slide 13 - Question de remorquage

timer
5:00
What can recall about the structure of the skin?

Slide 14 - Carte mentale

Explain the difference between the Epidermis skin and the Dermis

Slide 15 - Question ouverte

List as many key facts from today's session

Slide 16 - Carte mentale