User Tools

Site Tools



glossary:hair_follicle

Sac from which a hair grows and into which the sebaceous (oil) glands open. The follicle is lined by cells derived from the epidermal (outside) layer of the skin. Each follicle normally goes through a five-year cycle of growth and rest, with about 90% of the follicles growing hair at any one time, averaging about six inches (15 cm) of growth per year. Derived from the Latin word follis, for bag.

glossary/hair_follicle.txt · Last modified: 2012/10/16 14:40 (external edit)