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Hair Follicle Quiz
1. Which follicular region contains an important epithelial stem-cell niche?
Hair shaft
Bulge
Infundibular opening
2. Which phase is characterized by active hair growth?
Anagen
Catagen
Telogen
3. What is the primary role of the dermal papilla?
Produce sebum
Provide inductive growth signals
Form the stratum corneum
Score: 0 / 3