The average rate of hair fibre growth is around 035mm a day but this rate varies depending on the site of the hair follicle and the age and sex of the individual The length of the anagen growth phase for scalp hair is usually 610 years while telogen lasts just 3090 days and catagen is best estimated at 1421 daysThis is an online quiz called Hair Follicle There is a printable worksheet available for download here so you can take the quiz with pen and paper Hair growth rate is about 3 mm per week Although hair grows throughout the anagen phase, at some point, the hair follicle starts preparing for the next hair growth cycle In the diagram below, you can see that stem cells from the bulge area migrate down and along the outer root sheath towards the dermal papilla (as indicated by the blue arrow)
Human Hair Anatomy Diagram Of A Hair Follicle And Cross Section Royalty Free Cliparts Vectors And Stock Illustration Image
