Understanding Hair Anatomy and Functions

The video tutorial explores the anatomy of hair, detailing its structure and components. It covers the hair root, shaft, follicle, bulb, and dermal papilla, explaining their roles in hair growth and health. The erector pili muscle's function in causing goosebumps is also discussed. The tutorial describes the three layers of the hair shaft: medulla, cortex, and cuticle, highlighting their significance in hair strength, elasticity, and color. Understanding these elements is crucial for comprehending hair growth, care, and factors affecting hair health and appearance.

What is the primary protein that makes up hair?

• Myosin

• Elastin

• Keratin

• Collagen

Where is the hair root located?

• In the epidermal layer

• In the dermal layer

• Above the skin surface

• Beneath the skin surface

What structure surrounds the hair root and extends into the dermal layer?

• Hair bulb

• Hair follicle

• Hair shaft

• Dermal papilla

Which part of the hair contains actively dividing cells known as The Matrix?

• Hair shaft

• Cortex

• Cuticle

• Hair bulb

What is the function of the dermal papilla?

• To anchor the hair

• To protect the hair shaft

• To supply nutrients and oxygen

• To cause goosebumps

What causes the hair to stand upright, resulting in goosebumps?

• Hair follicle

• Erector pili muscle

• Hair bulb

• Cortex

Which layer of the hair shaft is the innermost?

• Cortex

• Cuticle

• Medulla

• Dermal papilla

What is the primary function of the cortex in the hair shaft?

• To provide color and strength

• To protect the inner layers

• To supply nutrients

• To cause goosebumps

Which layer of the hair shaft is responsible for its strength and elasticity?

• Hair bulb

• Cuticle

• Cortex

• Medulla

Why is understanding hair anatomy important?

• For understanding hair growth and care

• For styling hair

• For identifying hair color

• For cutting hair