BY: EMILY WU WILL FREDER ISABEL STEINTHAL KRISTIAN
CUNNINGHAM
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INTEGUMENTARY SYSTEM Also known as skin!
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FUNCTIONS Acts as protection Sensation (sense of touch) Heat
regulation Control of evaporation of body fluid Storage for water
and lipids (molecules; fats, vitamins) Absorption (oxygen,
nitrogen, carbon dioxide) Water resistant
EPIDERMIS Divided into strata or layers Stratum corneum Stratum
lucidum (only in palms and soles) Stratum granulosm Stratum
spinosum Stratum germinativum (also called stratum basale) Contains
no blood vessels Waterproofing and blocking infection
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BASEMENT MEMBRANE Separates epidermis and dermis Thin sheet of
fibers Controls traffic of cells and molecules
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DERMIS Consists of connective tissue and cushions body from
stress and strain Contains nerve endings, hair follicles, sweat
glands, other glands, blood vessels, ect Two layers/areas Papillary
region Reticular region
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HYPODERMIS NOT a part of skin Connects skin to muscle and
bone
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MELANIN Melanin gives skin its color, the darker your skin is
the more melanin you have When you go in the sun, the cells make
extra melanin to protect you from getting burned by the suns UV
rays
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HAIR Develops from the epidermis Made of threads of cells that
develop from the epidermis and cover most of the body Each hair has
a medulla, cortex, and cuticle. The medulla in the center contains
soft keratin and air The cortex (innermost and thickest layer) has
the pigment that gives hair color The cuticle (the outermost layer)
has cells that overlap like scales
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NAILS Develop from the epidermis Parts of the nail are the
lunula, cuticle, nail plate, free edge, and root Luluna is the
white half-moon shaped part of the base Cuticle is where the nail
meets your skin Nail plate, or body, is the actual nail Free Edge
is the white part at the tip Root is hidden under skin folds
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SYSTEMS SKIN WORKS WITH Circulatory System- capillaries near
skin surface open to cool off your body and close to conserve heat
Immune System- skin releases fluid to kill bacteria Nervous System-
neurons in skin senses world around you Muscular System- skin
covers and protects Skeletal System- covers and protects
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DEFECTS OR DISORDERS The most common are: Acne Eczema
Seborreheic Dermatitis Skin Cancer Psoriasis
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ACNE LOTS of pimple Happens when passageway from skins pores to
oil glands become clogged
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ECZEMA Super dry, flaky skin Usually born with it, but you can
develop it from REALLY dry skin or irritantation
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SEBORREHEIC DERMATITIS Oily, waxy patches Runs in families
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SKIN CANCER Most common are Basal Cell Carcinoma and Squamous
Cell Carcinoma Deadliest is Melanoma Usually from to much UV
radiation from the sun
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PSORIASIS Build up of excess skin tissue that looks red and
thick, and is covered with silvery scales Genetic disorder
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GERNERAL INFORMATION Every minute of the day we lose about
30,000 to 40,000 dead skin cells off the surface of our skin 95% of
the cells of your epidermis work to make new cells, the other 5%
work to make a substance called melanin
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FUN FACTS Integument means covering Your skin is one of (if not
THE) largest organ Every month you have a whole new layer of skin
You will shed 40 pounds of skin in a lifetime The average adult has
20 square feet of skin Your eyelids have the thinnest skin Goose
bumps are little pimples that help retain a layer of warm air over
our body The body has about 3,000,000 sweat glands You sweat 30
gallons a day
