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22 Cards in this Set
- Front
- Back
examples of thicker skin |
back, scalp, soles of feet, and palm of hands |
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examples of thinner skin |
eyelids, lips, ears |
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epidermis |
the tough, external layer that forms a watertight covering for the body |
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what happens when the cells die in the epidermis |
new cells form in the germinal layer and push up and replace them |
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dermis |
the inner layer of skin right below the germinal layer |
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what is in the dermis |
characteristics of the skin such as hair follicles, sweat glands, and sebaceous glands |
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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
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what parts of the body do mucous membrane cover |
mouth, nose, vagina, and anus |
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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 |
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what do the blood vessels in the skin do in a hot enviroment |
dilate to radiate heat from the body's surfaces |
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what are closed injuries |
damage occurs beneath the skin but the surface remains intact |
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what are open injuries |
damage that creates a break in the surface of the skin exposing deeper tissue |
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what are burns |
when the soft tissue absorbs more energy thsn it can absorb without injury. |
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examples of types of burns |
thermal heat, friction heat, toxic chemicals, electricity, nuclear radiation
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how are closed injuries characterized |
by history of blunt trauma, pain at the site of injury, swelling beneath the skin, and discoloration |
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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. |
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what is ecchymosis |
the blue or black discoloration in a contusion injury |
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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 |
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what is caompartment syndrome |
when swelling occurs and the blood vessels become compressed, cutting of blood flow |
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what is an abrasion |
a wound to the superficial layer of skin caused by friction against a hard or rough surface |
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what is a laceration |
a jaggaed cut from a sharp object or blunt trauma that causes the skin to tear |
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what is an evisceration |
when the organs may protrude through the wound |