Integumentary System

Epidermis (# of layers)

consists of 4 or 5 distinct layers dependent on location.

hepatitis

Impaired liver function (________ or liver disease) allows bile to accumulate, which stains the skin.

Merkel Cells

touch receptors (in hands and all over the body- sends waves into the brain)

Tactile

touch and pressure

Thermal

warmth and coolness

Stratum Basale

deepest

Keratinocytes

produce keratin (helps your hair and nails grow)

Melanocytes

produce melanin (helps with pigmentation in hair and skin)

Langerhans cells

associated with the immune system (produces good healthy immune system)

Hyperthermia

increase in core temperature

Temperature above 105℉ (41 degrees ℃)

brain cells die, seizures

Hypothermia

decrease in core temperature

93℉  (34℃)

normal body warming fails

90℉ (32℃)

shivering stops, heart sounds diminish, cardiac irritability increases

70℉ (21℃)

Present with deathlike appearance and possible irreversible asystole

Celsius to Fahrenheit

(Cx9/5)+32=F

Fahrenheit to Celsius

(F-32)x5/9=C

Integumentary System

Includes skin, hair, nails, glands; also contains sensory receptors & vascular network

skin can absorb...

Fat-soluble vitamins, O2, CO2, and some toxins - acetone, lead, mercury, and poison ivy, and oak

Epidermis

Thinnest & outermost layer

Composed of keratinized stratified squamous epithelium

Dermis

Deepest & innermost layer

Composed of connective tissue

Hypodermis

Composed of Loose connective tissue & Adipose tissue

Binds skin to underlying tissue