Chapter 5 - The Integumentary System - Hair and Hair Follicles
Keratinization is complete
The shaft
Keratinization is still ongoing
The root
The body hair of children and adult females is
Vellus hair
This hair growth is pale, fine hair is
Vellus hair
hair that is shed faster than it is replaced.
Alopecia
This pulls hair upright and produces the goose bumps on skin surface.
Arrector pili muscle
The bulky layer surrounding the medulla, consists of several layers of flattened cells.
Cortex
The single layers of cells overlapping each other. Most keratinized part of the hair.
Cuticle
The wall of the hair follicle that is derived mainly from an invagination of the epidermis
Epithelial root sheath
The thickened basal lamina of the hair follicle wall
Glassy membrane
This hair structure is the deep end of the follicle
Hair bulb
This knot of sensory nerve endings is wrapped around each hair bulb.
Hair follicle receptor (root hair plexus)
This hair structure folds down from the epidermal surface into the dermis
Hair follicles
Actively dividing area of the hair bulb that produces hair in the region called the hair bulge
Hair matrix
This hair structure contains a knot of capillaries that supplies nutrients to the growing hair and signals it to grow.
Hair papilla
genetically determined, sex-influenced condition.
Male pattern baldness
The central core, consists of large cells and air space, only part of hair that is soft keratin, is absent in fine hairs.
Medulla
The hair has these three concentric layers of keratinized cells called
Medulla, Cortex, and Cuticle
The wall of the hair follicle that is derived from the dermis
Peripheral connective tissue sheath
The coarser, longer hair is
Terminal hair
The hair of the eyebrows and scalp is
Terminal hair
This hair grows in response to the stimulating effects of androgens (of which testosterone is the most important)
Terminal hair