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30 Cards in this Set
- Front
- Back
- 3rd side (hint)
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The integumentary system includes the...
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skin, nails, and sweat and oil glands.
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272
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List the three major functions of the skin:
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-Temperature Regulation
-First-line of defense against infection -Fluid/water balance regulation |
272
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The layers of the skin contain nerve receptors for..
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temperature, touch, pain, and pressure.
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272
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How much weight does the integumentary system account for?
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~15% of body weight
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273
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laceration
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A wound with a smooth or jagged edge, resulting from tearing scraping action. Often from a cut or a severe blow.
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273
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avulsion
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Flaps of skin and tissue are torn loose or pulled off completely.
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273
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amputation
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The cutting or tearing off of a body part.
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273
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abrasion
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Loss of the outer layer of skin or mucous membrane because it has been rubbed or scratched off.
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273
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incision
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Smooth cut, usually made by a sharp object.
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273
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hypodermis
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Also know as the subcutaneous tissue, directly below the dermis. Contains much a of the body's fat, as well as blood vessels and nerves.
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273
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dermis
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Located between the epidermis and hypodermis and contains dense and irregular connective tissue, with very little fat tissue. Most of the nerve ending, hair follicles, smooth muscles, glands, and lymphatic vessels that originate in the epidermis etend into the dermis.
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273-274
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hypodermis
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Refers to "below the skin" commonly applied to shots or injections.
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274
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Burns only involving the epidermis are classified as what?
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superficial burns or first-degree burns
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275
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Burns involving the epeidermis and portion of the dermis are classified as what?
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partial-thickness burns or second-degree burns
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275
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Burn involving all three layers of skin and may extend to the bone, muscle, and internal organs are classified as what?
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Full-thickness burns or third-degree burns
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275
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epidermis
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The superficial, outer layer of the skin that contains numerous nerve vessels but no nerve endings.
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275
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What types of cells it the epidermis made up of?
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squamous epithelia or flat sheets of cells.
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275
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keratinocytes
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The cells of the epidermis that produce a protein called keratin, which is responsible for the strength and permeability.
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281
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melanocytes
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The cells of the epidermis that contribute to skin color by producing a dark pigment called melanin, which protects the skin from the sun.
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281
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albinism
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A condition resulting from the skin's inability to synthesize melanin and is characterized by milky or translucent skin, pale or colorless hair, and pik or blue irises.
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275
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How many layers does the epidermis contain?
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5 layers
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277
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hair
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A thradlike, keratin-containing appendage of the outer layer of the skin that is present on body surfaces, except the palms, soles, lips, and a few areas of the external genitalia.
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277
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hair aids in
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Thermal regulation as well as sensation.
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277
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Hair develops in
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hair follicle beneath the skin
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277
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An _______ muscle attached to the base of the hair pulls the hair perpendicular to the surface of the skin in response to cold or threatening situations.
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erector
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277
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sebaceous glands
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Glands contained withing the dermis of the entire body except for the palms and soles. Produce sebum, a combination of fat and cellular debris. Function to protect and moisturize the skin.
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277
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ceruminous glands
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Sweat glands in the ear that produce earwax.
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277
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What are the two types of sweat glands?
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Merocrine and apocrine sweat glands.
Merocrine produce a solution containing salt and urea that is secreted directly onto the surface through sweat pores. Apocrine are coiled tubular glands that usually open into the hair follicles of the axillae and genitalia, as well as around the anus. |
277
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nail
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The flattened structure at the end of each finger and toe that is made of keratin from the epidermis.
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279
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The base of the nail bed, white crescent-shaped structure is the ______.
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lunula
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279
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