hair matrix
{{Short description|Produces hair shaft}}
The hair matrix, or simply matrix, produces the actual hair shaft as well as the inner and outer root sheaths of hair.James, William; Berger, Timothy; Elston, Dirk (2005) Andrews' Diseases of the Skin: Clinical Dermatology (10th ed.). Saunders. Page 8. {{ISBN|0-7216-2921-0}}.