Intergumentary system

Skin is made of ?

Stratified squamous, areolar connective and dense irregular connective

accessory structures include..

hair, nails and glands

Functions of skin

protect, homeostasis of body temp, energy storage in adipose, sensory receptors, secretion,

what are the 3 layers of the skin?

epidermis, dermis and hypodermis

How many layers in epidermis thick skin

5 layers

How many layers in thin skin

4 layers

what is each layer in the epidermis called?

stratum

Deepest layer, attach by desmosomes, cells continously divide

Stratum Basale

Epidermal ridges

create fingerprints and have no blood vessels

contains daughter cells from mitosis, contain papillae

Stratum Basale

Cells stop dividing and create keratin

Stratum granulosum

Keratin

water resistant protein

layer of keratinized cells found only in thick skin

Stratum Lucid

Outermost layer of skin

Stratum Corneum

How many layers are in the stratum corneum

15-30 layers of dead flattened keratinized cells

what does the dermis contain?

Papillary layer and reticular layer

contains areolar tissue that also contains blood vessels and nerves

papillary layer

contains dense irregular tissue and is deeper

reticular layer

where are melanocytes located

stratum basale

Hypodermis functions

provides insulation, shock absoption and energy reserve

stablizes skin and seperates it from muscles, adipose, baby fat

Hypodermis