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Chapter 5

Integumentary Sytem

TermDefinition
apocrine glands glands located mainly in axillary and anogenital areas that secrete sweat in response to stress and sexual stimulaiton
ceruminous gland gland in the external ear canal that secretes waxy cerumen
cutaneous membrane the skin
dermis the layer of the skin lying immediately under the epidermis
eccrine glands glands located throughout the body that secrete sweat directly onto the skin's surface which helps control body temperature
epidermis the outermost layer of the skin
hair follicle a sheath of epidermis surrounding each hair
hypodermis subcutaneous tissue composed mostly of fat lying under the dermis
keratin a tough fibrous protein that provides structural strength to the skin, hair, and nails
melanin pigment produced by melanocytes that gives color to the hair and skin
sebaceous gland glands that secretes oily substance called sebum into each hair follicle
stratum basale the innermost layer of the epidermis, where new skin cells are germinated
stratum corneum the outer most layer of the epidermis, consisting of dead, flattened cells called keratinocytes
subcutaneous beneath the skin
cyanonsis a deficiency of oxygen in circulating blood that causes a blue tint to the skin
jaundice impaired liver function that allows bile to accumulate and cause a yellow discoloration to the skin and whites of the eyes
albinism a genetic lack of melanin that causes extremely pale skin, white hair, and pink eyes
erythema increased blood flow in dilated blood vessels close to the skin's surface that causes abnormal redness. May be the result of heat, exercise, sunburn, or the emotions of embarrassment or anger
pallor pale skin caused from decreased blood flow that can be from cold temperatures, fear, or emotional stress, low blood pressure, or blood loss
clubbing caused by long-term oxygen defiency usually lung disease. the distal ends of the fingers enlarge and look like a drumstick
cyanosis bluish discoloration of the skin that is often a first sign of oxygen deficiency
acne inflammation of the sebaceous glands, especially during puberty, in which the follicle becomes blocked with keratinocytes and sebum, resulting in whiteheads while continued inflammation causes pus causing pimples
dermatitis inflammation of the skin characterized by itching and redness, often the result of exposure to chemicals or toxins
eczema itchy, red rash caused by an allergy; lesions initially weep or ooze serum and may become crusted thickened or scaly
impetigo contagious bacterial infection of the skin; usually caused by streptococci or staphylococci
psoriasis a recurring skin disorder characterized by red papules and scaly silvery plaques with sharply defined borders
tinea any fungal infection of the skin, usually occurs in most areas such as the groin, axilla, and foot
urticaria allergic reaction resulting in multiple red patches that are intensely itchy
first degree burn partial thickness; superficial; involves only the epdermis, causes redness, swelling, and pain
second degree burn partial thickness, deep burn, involves the epidermis and part of the dermis, causes blistering, pain, and swelling
third degree burn full thickness; extends through the epidermis and dermis into the subcutaneous layer. not initially painful because nerve endings are involved
Created by: lindstromjPN110
 

 



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