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22 Cards in this Set

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examples of thicker skin

back, scalp, soles of feet, and palm of hands

examples of thinner skin

eyelids, lips, ears

epidermis

the tough, external layer that forms a watertight covering for the body

what happens when the cells die in the epidermis

new cells form in the germinal layer and push up and replace them

dermis

the inner layer of skin right below the germinal layer

what is in the dermis

characteristics of the skin such as hair follicles, sweat glands, and sebaceous glands

what do sebaceous glands do

produce sebum along side of the shaft of a hair follicles to create a waterproof layer to the skin, keeping the skin supple

what parts of the body do mucous membrane cover

mouth, nose, vagina, and anus

what do the blood vessels in the skin do in a cold enviroment

constrict to keep blood from the skin preventing the heat in the body from radiating. keep the heat in and the cold out

what do the blood vessels in the skin do in a hot enviroment

dilate to radiate heat from the body's surfaces

what are closed injuries

damage occurs beneath the skin but the surface remains intact

what are open injuries

damage that creates a break in the surface of the skin exposing deeper tissue

what are burns

when the soft tissue absorbs more energy thsn it can absorb without injury.

examples of types of burns

thermal heat, friction heat, toxic chemicals, electricity, nuclear radiation

how are closed injuries characterized

by history of blunt trauma, pain at the site of injury, swelling beneath the skin, and discoloration

what is a contusion

a bruise from blunt force striking the body. cells within the dermis are damaged and small blood vessels are usually torn.

what is ecchymosis

the blue or black discoloration in a contusion injury

what is a hematoma

a collection of blood within an injury or a body cavity that usually occurs when a large blood vessel is torn and bleeds rapidly

what is caompartment syndrome

when swelling occurs and the blood vessels become compressed, cutting of blood flow

what is an abrasion

a wound to the superficial layer of skin caused by friction against a hard or rough surface

what is a laceration

a jaggaed cut from a sharp object or blunt trauma that causes the skin to tear

what is an evisceration

when the organs may protrude through the wound