Hair Structure

Hair Structure
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Slide 1: Slide

This lesson contains 21 slides, with interactive quizzes, text slides and 1 video.

Items in this lesson

Hair Structure

Slide 1 - Slide

Slide 2 - Slide

Slide 3 - Slide

Slide 4 - Slide

Slide 5 - Slide

Anagen is...
A
Resting Phase
B
Growing and resting Phase
C
Active Growing Phase
D
Changing Phase

Slide 6 - Quiz

Catagen is...
A
Resting Phase
B
Growing and resting Phase
C
Active Phase
D
Changing Phase

Slide 7 - Quiz

Telogen is...
A
Growing and resting Phase
B
Active Phase
C
Changing Stage
D
Resting Phase

Slide 8 - Quiz

Slide 9 - Video

What term describes a molecule that avoids water?
A
Hydrophilic
B
Soluble
C
Polar
D
Hydrophobic

Slide 10 - Quiz

Which type of molecule is repelled by water?
A
Hydrophobic
B
Hydrocarbon
C
Hydrogen
D
Hydrophilic

Slide 11 - Quiz

Cuticle 
  • Is made up of transparent overlapping scales 
  • Heat/ chemicals will open the cuticles 
  • The cuticle scales should ideally be closed from root to tip to give the hair shine and lustre 
  • Healthy hair reflects light 
  • Damaged cuticle scales will make the hair feel porous and appear dull
  • When the hair is in good condition they are water repellent and when in poor condition they will allow more water to be absorbed into the hair making it more porous. 

Slide 12 - Slide

What happens when the cuticle scales are damaged?
A
Hair loses color
B
Hair feels porous and appears dull
C
Hair grows faster
D
Hair becomes thicker

Slide 13 - Quiz

What can open the cuticles?
A
Water
B
Sunlight
C
Heat/chemicals
D
Brushing

Slide 14 - Quiz

What is the cuticle made up of?
A
Transparent overlapping scales
B
Sebaceous glands
C
Protein fibers
D
Melanin pigment

Slide 15 - Quiz

Cortex 
  • This is the section under the cuticle and is where most the action happens.  
  • Your natural colour is determined in the cortex and this is where artificial colouring mostly takes place.
  • It is this layer that has the bonds which hold your hair in place to determine if your hair is straight, wavy, curly or very curly. 
  • Where the hair is temporarily or chemically changed from straight to curly or curly to straight. 
  • It is the main part of the hair that gives it's strength and elasticity.  

Slide 16 - Slide

Which part of the hair is responsible for its strength and elasticity?
A
Cuticle
B
Epidermis
C
Medulla
D
Cortex

Slide 17 - Quiz

Which layer of the hair holds the bonds to determine its texture?
A
Epidermis
B
Medulla
C
Cortex
D
Cuticle

Slide 18 - Quiz

Which layer of the hair is responsible for determining your natural color?
A
Medulla
B
Epidermis
C
Cuticle
D
Cortex

Slide 19 - Quiz

Medulla  
  • The medulla is the least interesting layer. 
  • it is the central part of the hair but is not always present. 
  •  In a single strand it may fade in and out when analysed under a microscope  or it may be present all the way through in some hair types.
  • it tends to appear in more thicker or coarser hair textures. 

Slide 20 - Slide

In which hair types is the medulla more likely to be present all the way through?
A
Blonde or brunette hair types
B
Thicker or coarser hair types
C
Curly or wavy hair types
D
Thin or fine hair types

Slide 21 - Quiz