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30 Cards in this Set

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The integumentary system includes the...
skin, nails, and sweat and oil glands.
272
List the three major functions of the skin:
-Temperature Regulation
-First-line of defense against infection
-Fluid/water balance regulation
272
The layers of the skin contain nerve receptors for..
temperature, touch, pain, and pressure.
272
How much weight does the integumentary system account for?
~15% of body weight
273
laceration
A wound with a smooth or jagged edge, resulting from tearing scraping action. Often from a cut or a severe blow.
273
avulsion
Flaps of skin and tissue are torn loose or pulled off completely.
273
amputation
The cutting or tearing off of a body part.
273
abrasion
Loss of the outer layer of skin or mucous membrane because it has been rubbed or scratched off.
273
incision
Smooth cut, usually made by a sharp object.
273
hypodermis
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.
273
dermis
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.
273-274
hypodermis
Refers to "below the skin" commonly applied to shots or injections.
274
Burns only involving the epidermis are classified as what?
superficial burns or first-degree burns
275
Burns involving the epeidermis and portion of the dermis are classified as what?
partial-thickness burns or second-degree burns
275
Burn involving all three layers of skin and may extend to the bone, muscle, and internal organs are classified as what?
Full-thickness burns or third-degree burns
275
epidermis
The superficial, outer layer of the skin that contains numerous nerve vessels but no nerve endings.
275
What types of cells it the epidermis made up of?
squamous epithelia or flat sheets of cells.
275
keratinocytes
The cells of the epidermis that produce a protein called keratin, which is responsible for the strength and permeability.
281
melanocytes
The cells of the epidermis that contribute to skin color by producing a dark pigment called melanin, which protects the skin from the sun.
281
albinism
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.
275
How many layers does the epidermis contain?
5 layers
277
hair
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.
277
hair aids in
Thermal regulation as well as sensation.
277
Hair develops in
hair follicle beneath the skin
277
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.
erector
277
sebaceous glands
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.
277
ceruminous glands
Sweat glands in the ear that produce earwax.
277
What are the two types of sweat glands?
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
nail
The flattened structure at the end of each finger and toe that is made of keratin from the epidermis.
279
The base of the nail bed, white crescent-shaped structure is the ______.
lunula
279