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spidery,brown to black pigment-producing cells

Add color to the skin
It provide protection from UV radiation
Production increases when the skin exposed to sunlight

is the pigment or color produced by melanocytes

they alert and activate immune cells to a threat such as bacterial or viral invasion

2nd major skin region

Dense fibrous connective tissue
Contains collagen and elastic fibers
Contains fibroblasts, nerve endings, smooth muscle, glands, blood vessels, sensory receptors and hair follicles

2 principal region of dermis

Produce fingerprints

It is unique patterns of loops and ridges in the epidermis that remain unchanged throughout life

Furnish nutrients for the epidermis
Allow heat to radiate to the skin surface

pain and temperature receptors

it is deepest skin layer
-accounts for 80% of dermis
-it contain blood vessels,sweat & sebaceous glands

pressure receptors

It is not part of skin
Located,Below dermis
Foundation of skin
Attaches skin to underlying muscle and bone

Contains loose and adipose tissue
Contains ½ of body’s fat/adipose tissue
Shock absorber and insulate deeper tissue

body fat for females

body fat for males

skin color and variations are determined by

melanin ranges form

responsible for hair and eye color
- provides protection against UV light
- amt. produced determined by genetics, UV light,
hormones

freckles are accumulation of

absence of melanin

yellow-orange pigment found in plants
- accumulates in stratum corneum

- gives pinkish-red color
- found in red blood cells