Intermediate Hair Quiz

Q1. What is the function of the dermal papilla in the hair follicle?

• Anchors the hair to skin surface
• Produces keratin directly
• Lubricates the follicle
• Supplies nutrients and growth signals

Q2. Which layer of the hair shaft contains the pigment melanin?

• Cuticle
• Cortex
• Root sheath
• Medulla

Q3. What happens during the catagen phase of the hair cycle?

• Hair falls out actively
• Hair shaft rapidly grows
• Hair matrix re-pigments
• Growth stops and follicle shrinks

Q4. Which gland associated with hair secretes oil to lubricate the hair and skin?

• Sebaceous gland
• Lacrimal gland
• Sweat gland
• Mammary gland

Q5. What type of connective tissue surrounds the entire hair follicle?

• Connective tissue sheath
• Synovial sheath
• Adipose capsule
• Basement membrane

Q6. Which hormone is primarily linked to androgenic hair loss?

• Dihydrotestosterone (DHT)
• Insulin
• Cortisol
• Estrogen

Q7. How does the medulla differ from the cortex in hair structure?

• It is pigmented and thicker than the cortex
• It is the outermost layer
• It contains hair papilla
• It is central, may be absent, and less dense

Q8. What is the primary function of keratinocytes in the hair matrix?

• Detect touch stimuli
• Produce sebum
• Form hair shaft and inner root sheath
• Anchor hair to the dermis

Q9. Which vitamin deficiency is most commonly linked to brittle or thinning hair?

• Iron or vitamin D
• Folic acid or magnesium
• Vitamin E or zinc
• Vitamin K or calcium

Q10. What role does the outer root sheath play in hair regeneration?

• Forms the cuticle
• Houses stem cells for follicle renewal
• Secretes protective oil
• Produces melanin