Skin System
Terms
undefined, object
copy deck
- Lanugo hair
- fetus hair, lightly pigmented
- vellus hair
- fine hair, cover most of body in adults
- Terminal hair
- coarse, pigmented hairs, fully developed in scalp, beard, pubic, and axillary regions
- Eumelanins
- tyrosinase dependent, brown and black hairs
- Pheomelanins
- yellow and orange color, contain cystein - high sulfur content
- Infundibulum
- upper, funnel shaped invagination that extends from the follicular orifice above the entrance of the sebaceous duct below
- Isthmus
- short midsection
- Inferior segment
- from the erector pili muscle insertion to base of follicle.
- Anagen
- growing phase - 2-8 yrs.
- Telogen
- resting phase lasts 3 months