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Integumenary System

A&P Corbit

Define cutaneous membrane skin
Mucous membranes secrete what mucus
Mucous membranes lines what body cavities that are open to the outside
Serous membranes secrete what and what is their function serous fluid, prevent friction
Serous membranes line what cavities that are closed to the outside
The Integumentary systems consist of: skin, hair, nails
Functions of the Integumentary system are: protection, temperature maintenance, synthesis & storage of nutrients, sensory reception, excretion & secretion
The integumentary system prevents deeper tissues from: Mechanical damage-brusing chemical damage - acid and bases bacterial damage - infections Ultraviolet radiation - sunlight thermal damage - heat & cold Desiccation - drying out
The integumentary system aids in what that is controlled by the nervous system heat loss or heat retention
the integumentary systems also aids in excretion of urea and uric acid and synthesizes vitamin D
Vitamin D is important in absorption and metabolism of calicum
The outer layer of skin is known as epidermis
The inner layer (underlying) layer of skin is dermis
Define blister collection of fluid when the epidermis and dermis is separates
The subcutaneous tissue is mainly adipose tissue
The epidermis is a vascular composed of up to 5 layers
Most of the cells of the epidermis are what keratinocytes
keratinocytes produce what keratin (a tough protein)
The deepest layer of the epidermis is known as stratum basale or stratum germinaitivum
The outer most layer of the epidermis is the stratum corneum
The stratum corneum is "replaced" and we get 'new' epidermis every 25-45 days
Melanin = a pigment; increases with exposure to sunlight
Merkel cells are what scattered in the epidermis and are for the sense of touch
Herpes Simplex I causes cold sores (fever blisters)
The dermis or corium does what 'holds' the body together and has good blood and nerve supply
Collagen fibers are strong
Elastin fibers do what stretch and recoil
A decrease in what causes wrinkles Elastin fibers
Decubitus ulcer is what ulcer that appear in pressure areas (bedridden patients), usually found on buttocks
To help prevent Decubitus ulcers, do what position patient every 2 hours; keep dry; nutrition
What are the three pigments that contribute to skin color? melanin, carotene, oxygen
Cyanosis = bluish skin due to decreased oxygen
Alternation of skin color may what notify the health care provider of certain diseases or conditions
What are some alternation of skin color erythema - redness Pallor or blanching - dehydration, low blood pressure or enemea Jaundice - yellow Bruises - blood disorders or abuse
Cutaneous glands are what type of gland exocrine glands that release secretions to the skin surface via ducts
Sebaceous glands are oil glands
Where are the sebaceous glands attached to the hair shaft
What is the function of the sebum? lubricates the hair and skin to inhibit the growth of bacteria
Define acne over activity of the sebaceous glands
Define seborrhea increased discharge of sebaceous matter upon the skin
Sudoriferous glands are sweat glands
Eccrine glands produce what sweat
Apocrine glands are located where? genital and axillary areas
Which gland is important in heat regulation of the body eccrine
Which gland is activated during stress or pain? Apocrine
Ceruminous glands are located where? external ear canel
Ceruminous glands secrete what cerumen
Define dehydration loss of fluids
Hair and hair follicles are located within which layer of skin? dermis
What projects from the surface of the scalp or skin? hair shaft
What is the function of the arrector pili muscle? when contracted it causes goose bumps or the hair to stand up
Hair is kept soft and pliable by what type of gland? sebaceous gland
The nail is a modification of which layer of skin epidermis
If the blood flow is decreased, thus oxygen is decreased what color might the skin be cyanotic
Define the Rule of Nines estimates the percentage of the body that is burned
Describe 1st degree burn red, painful, no blisters, only epidermis is affected
Describe 2nd degree burn red, painful, blistered, may be swollen, damages epidermis and part of the dermis
Describe 3rd degree burns epidermis and dermis is destroyed, may affect underlying bones, tissue and tendons, skin is charred and dry
The greatest threat for burn patients is infection
Define tinea pedis athletes foot
A cold sore is caused by HSV1 virus
Define contact dermatitis inflammatory skin rash that results something that you have come in contact with
Define impetigo and is it contagious? bacterial infection caused by staph, highly contagious; mostly children are affected
Define psoriasis chronic over growth of the epidermis - there is no cure
Define verruca and what causes it warts, virus
The sun worshipper's rule for skin cancer is A- asymmentry B- border irregularity c- color D - diameter (6mm) E - elevation
Define Lanugo downy type of skin seen at 5th or 6th month of gestation
Define Vernix caseosa a cheesy substance that protects the fetus
Define Milia over activity of the sebaceous glands; milk spots on infants
Define Alopecia hair loss
In warm environments, arterioles do what dialate thus increasing blood flow
When arterioles dialate what happens brings excess heat close to the body surface to be radiated to the environment
In cold environments, arterioles do what? constrict thus decreasing blood flow
When arterioles constrict what happens keeps heat within the body
Define necrosis tissue death
Define cyanosis bluish skin color as a result from reduced oxygenation of the blood in superficial vessels
What are 2 ways the skin helps get rid of body heat? radiation from the skin surface and evaporation of sweat
What helps the layer beneath the dermis insulate the body fat in the subcutaneous tissue layer
A localized concentration of melanin is moles or freckles
The water proofing protein epidermal cells is called keratin
Wrinkling in the skin is due to loss of the elastin fibers of the skin
A decubitus ulcer results when skill cells are deprived of oxygen
Created by: jhowe2323



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