Hair & Scalp SciencesCâu 61 / 100
The active growing phase of the hair growth cycle is called:
a.Telogen
b.Anagen
c.Catagen
d.Keratin
Giải thích
Anagen is the phase of active growth during which the hair is being produced, and it can last several years. Catagen is the brief transition phase and telogen is the resting/shedding phase.
Luyện miễn phí toàn bộ 100 câu hỏi — không cần đăng ký.
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