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composed of stratified squamous keratinized epithelial tissue
epidermis
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composed of loose fibrous connective tissue
dermis
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consists of loose areolar connective tissue interspersed with a substantial proportion of adipose tissue "hypodermis"
subcanteous
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form a minute network of small branches in the superior layers of the dermis
lymphatic vessels
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melanin synthesizing cells
melanocytes
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mobile phagocytic cells that phagocytes bacteria that enter thru breaks in the skin, also attack cancer cells
langerhans cells
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epithelium filled with small particles of sebaceous material called sebum
-
serves as an excellent medium for growth of bacteria
sebum
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smooth muscle attached to each hair follicle that causes hair to stand on end
arrector pili
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secretes ear wax
ceruminous gland
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sweat gland that is located all over the body and plays a role in maintaining normal body temp
eccrine
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sweat gland that is located in the axillary and genital region, activated during times of stress, exercise and emotional events
apocrine
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affects only the dermis, signs of swelling, erythema, pain and no blistering
first degree burns
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involves the dermis and shows signs of extreme pain, blisters and swelling
2nd degree burning
-
involves all layers of the skin and upper portion of subcutaneous tissue layer, shows signs of shock, possible pain and dehydration
3rd degree
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black in color and composed primarily collagen, left by destruction of layers
eschar
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involves muscles, tendons and possibly bone "char burns"
4th degree
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method of determining how much of the surface of body has been burned
rule of nines
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4 cutaneous sensations
- touch pressure
- pain
- warmth
- cold
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receptors that respond to tempature
thermoceptors
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receptors that respond to painful irritants
nociceptors
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receptors that respond to pressure or stretching
mechanoreceptors
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nerve endings that have no Schwann cells
free nerve endings
-
nerve endings that contain Schwann cells
encapsulated
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