Integumentary System Anatomy of the Skin

what is the largest organ in the body

skin

the skin protects..

inner organs

cutaneous

pertaining to the skin

keratin

protein that strengthens hair, skin, and nails.

true or false? Keratin makes skin waterproof.

True

melanin

a black pigment that gives the skin its color and protects the skin from UV light.

epidermis

outermost layer of the skin

what is the epidermis composed of?

stratified squamous epithelium

the dermis is..

layered between the epidermis and the hypodermis

what is the dermis made of?

loose connective tissue

the dermis has 2 layers of connective tissue called

the papillary and reticular

elastin and collagen fibers are produced by

fibroblasts

the epidermis is thin and..

avascular

what are the layers of the skin in the epidermis

stratum basale, stratum spinosum, stratum, granulosum, and stratum corneum

stratum lucidum

thick skin

the cells in all the layers are called keratinocytes EXCEPT the..

stratum basale

the keratin cells in the stratum corneum are

dead and replaced by cells from deeper layers

the stratum basale contains

melanocytes

the dermis is

vascular

the hypodermis (subcutaneous) connects..

the skin to the underlying fascia of the bones and muscles.

the hypodermis is NOT

part of the skin

the hypodermis consists of

loose, areolar, and adipose tissue

functions of the hypodermis

store fat, provide insulation, and cushioning for the integumentary system