Hair and Skin Structure

Multiple Choice

Which of the following statements about hair is correct?

• Hair is mainly made of a protein called Keratin.

• Hair cannot absorb water at all.

• The average head contains less than 10,000 hairs.

• Hair does not stretch.

Multiple Choice

Which part of the hair is responsible for its outer protection?

• Cuticle

• Cortex

• Medulla

• Follicle

Multiple Select

Which of the following are possible causes of cuticle damage?

• UV rays

• Chemicals like color and perm

• Aggressive handling

• All of the above

Open Ended

List two ways the cuticle of hair can be damaged.

Open Ended

What are the main functions of the cortex in hair structure?

Multiple Choice

Which part of the hair is shown as damaged in the last image, and what is a visible sign of this damage?

• Cortex; frayed and split appearance

• Cuticle; smooth surface

• Medulla; hollow center

• Cuticle; overlapping scales

Multiple Choice

Which part of the hair structure is not always present, especially in fine hair?

• Medulla

• Cortex

• Cuticle

• Follicle

Multiple Choice

Based on the diagram, what are the three main parts of the hair shaft?

• Medulla, Cortex, Cuticle

• Epidermis, Dermis, Follicle

• Sebaceous gland, Hair shaft, Blood vessels

• Cortex, Dermis, Epidermis

Open Ended

Describe the main differences between the epidermis and the dermis as explained in the slides.

Multiple Select

Which of the following are functions of the epidermis?

• Barrier

• Hydration

• Colour (melanin pigment)

• Regulates

Multiple Choice

What is the main function of the dermis in the skin?

• It provides pliability and mechanical resistance to the skin and helps regulate body temperature.

• It produces melanin to protect against UV rays.

• It acts as a barrier to pathogens.

• It stores fat for insulation.

Multiple Select

Which of the following statements about the arrector pili muscle are correct?

• It is attached to the base of the hair follicle.

• It is stimulated by cold or fright.

• It produces sebum for the skin.

• It causes the hair follicle to stand upright.

Multiple Choice

Where are sebaceous glands most numerous on the human body?

• Scalp, forehead, chin, cheeks, and nose

• Palms and soles

• Back and chest

• Arms and legs

Multiple Choice

What is the function of the dermal papilla at the base of the hair follicle?

• It provides nourishment for new hair production.

• It secretes sebum to moisturize the skin.

• It attaches the hair follicle to the epidermis.

• It causes the hair to stand upright.

Open Ended

What is one interesting fact you learned about hair from this lesson, and how might it relate to everyday hair care?