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enclosed the hair,also an epithelial structure

2 parts of hair

enclosed within the follicle

portion projecting from the skin

it is formed by mitosis of the germinal epithelial cells at the base of the follicle

deepest part of the follicle

hair region

consist of central region,surrounded first by the cotex & then by a protected cuticle

composed of several layers of flattened cell,bulky layer

it encloses cortex,formed by a single layer of cells

it enclosed inner epithelial sheath

small bands of smooth muscle cells,connect each hair follicle to the dermis

Growth occurs in cycles:

Scalp hair grows for _______ and rests for _____

Eyelashes grow for _____ and rest for _____

We lose about ___ scalp hairs/day

is the loss or fading of melanin

Male pattern baldness is from the loss of the

thin plate with layers of dead stratum corneum cells with hard keratin
It is a scalelike modification of the epidermis that corresponds to the hoof or claw of other animals

transparent and nearly colorless but they look pink because of the rich blood supply in the underlying dermis

nail structure

visual part, free edge

covered by skin

the border of the nail,overlapped folds of skin

the stratum basale of the epidermis extends beneath the nail

its thickened proximal area,responsible for nail growth,it produces nail cells,heavily keratinized and die

stratum corneum that extends into nail bod

thickened nail matrix that appears as a white crescent